diff --git a/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_Buffer.java b/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_Buffer.java
index 70086be2..cffa8883 100644
--- a/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_Buffer.java
+++ b/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_Buffer.java
@@ -206,6 +206,7 @@ public abstract class GT_MetaTileEntity_Buffer extends GT_MetaTileEntity_TieredM
         if (aSide == getBaseMetaTileEntity().getBackFacing()) {
         	
             mTargetStackSize = (byte) ((mTargetStackSize + (aPlayer.isSneaking()? -1 : 1)) % 65);
+            if(mTargetStackSize <0){mTargetStackSize = 64;}
             if (mTargetStackSize == 0) {
                 GT_Utility.sendChatToPlayer(aPlayer, "Do not regulate Item Stack Size");
             } else {
diff --git a/src/main/java/gregtech/common/covers/GT_Cover_ControlsWork.java b/src/main/java/gregtech/common/covers/GT_Cover_ControlsWork.java
index ed53f298..abb6d0a3 100644
--- a/src/main/java/gregtech/common/covers/GT_Cover_ControlsWork.java
+++ b/src/main/java/gregtech/common/covers/GT_Cover_ControlsWork.java
@@ -53,7 +53,8 @@ public class GT_Cover_ControlsWork
     }
 
     public int onCoverScrewdriverclick(byte aSide, int aCoverID, int aCoverVariable, ICoverable aTileEntity, EntityPlayer aPlayer, float aX, float aY, float aZ) {
-        aCoverVariable = (aCoverVariable + 1) % 3;
+        aCoverVariable = (aCoverVariable + (aPlayer.isSneaking()? -1 : 1)) % 3;
+        if(aCoverVariable <0){aCoverVariable = 2;}
         if (aCoverVariable == 0) {
             GT_Utility.sendChatToPlayer(aPlayer, "Normal");
         }
diff --git a/src/main/java/gregtech/common/covers/GT_Cover_Conveyor.java b/src/main/java/gregtech/common/covers/GT_Cover_Conveyor.java
index 9d4816fb..d52cf94a 100644
--- a/src/main/java/gregtech/common/covers/GT_Cover_Conveyor.java
+++ b/src/main/java/gregtech/common/covers/GT_Cover_Conveyor.java
@@ -35,7 +35,8 @@ public class GT_Cover_Conveyor
     }
 
     public int onCoverScrewdriverclick(byte aSide, int aCoverID, int aCoverVariable, ICoverable aTileEntity, EntityPlayer aPlayer, float aX, float aY, float aZ) {
-        aCoverVariable = (aCoverVariable + 1) % 12;
+        aCoverVariable = (aCoverVariable + (aPlayer.isSneaking()? -1 : 1)) % 12;
+        if(aCoverVariable <0){aCoverVariable = 11;}
         switch(aCoverVariable) {
             case 0: GT_Utility.sendChatToPlayer(aPlayer, "Export"); break;
             case 1: GT_Utility.sendChatToPlayer(aPlayer, "Import"); break;
diff --git a/src/main/java/gregtech/common/covers/GT_Cover_DoesWork.java b/src/main/java/gregtech/common/covers/GT_Cover_DoesWork.java
index 5355a53d..0a440c5a 100644
--- a/src/main/java/gregtech/common/covers/GT_Cover_DoesWork.java
+++ b/src/main/java/gregtech/common/covers/GT_Cover_DoesWork.java
@@ -28,7 +28,8 @@ public class GT_Cover_DoesWork
     }
 
     public int onCoverScrewdriverclick(byte aSide, int aCoverID, int aCoverVariable, ICoverable aTileEntity, EntityPlayer aPlayer, float aX, float aY, float aZ) {
-        aCoverVariable = (aCoverVariable + 1) % 4;
+        aCoverVariable = (aCoverVariable + (aPlayer.isSneaking()? -1 : 1)) % 4;
+        if(aCoverVariable <0){aCoverVariable = 3;}
         switch(aCoverVariable) {
             case 0: GT_Utility.sendChatToPlayer(aPlayer, "Normal"); break;
             case 1: GT_Utility.sendChatToPlayer(aPlayer, "Inverted"); break;
diff --git a/src/main/java/gregtech/common/covers/GT_Cover_Drain.java b/src/main/java/gregtech/common/covers/GT_Cover_Drain.java
index 8d47d4a5..1a369dc2 100644
--- a/src/main/java/gregtech/common/covers/GT_Cover_Drain.java
+++ b/src/main/java/gregtech/common/covers/GT_Cover_Drain.java
@@ -58,7 +58,8 @@ public class GT_Cover_Drain
     }
 
     public int onCoverScrewdriverclick(byte aSide, int aCoverID, int aCoverVariable, ICoverable aTileEntity, EntityPlayer aPlayer, float aX, float aY, float aZ) {
-        aCoverVariable = (aCoverVariable + 1) % 6;
+        aCoverVariable = (aCoverVariable + (aPlayer.isSneaking()? -1 : 1)) % 6;
+        if(aCoverVariable <0){aCoverVariable = 5;}
         switch(aCoverVariable) {
             case 0: GT_Utility.sendChatToPlayer(aPlayer, "Import"); break;
             case 1: GT_Utility.sendChatToPlayer(aPlayer, "Import (conditional)"); break;
diff --git a/src/main/java/gregtech/common/covers/GT_Cover_EUMeter.java b/src/main/java/gregtech/common/covers/GT_Cover_EUMeter.java
index bc228d5f..8a593262 100644
--- a/src/main/java/gregtech/common/covers/GT_Cover_EUMeter.java
+++ b/src/main/java/gregtech/common/covers/GT_Cover_EUMeter.java
@@ -91,7 +91,8 @@ public class GT_Cover_EUMeter
     }
 
     public int onCoverScrewdriverclick(byte aSide, int aCoverID, int aCoverVariable, ICoverable aTileEntity, EntityPlayer aPlayer, float aX, float aY, float aZ) {
-        aCoverVariable = (aCoverVariable + 1) % 12;
+        aCoverVariable = (aCoverVariable + (aPlayer.isSneaking()? -1 : 1)) % 12;
+        if(aCoverVariable <0){aCoverVariable = 11;}
         switch(aCoverVariable) {
             case 0: GT_Utility.sendChatToPlayer(aPlayer, "Normal Universal Storage"); break;
             case 1: GT_Utility.sendChatToPlayer(aPlayer, "Inverted Universal Storage"); break;
diff --git a/src/main/java/gregtech/common/covers/GT_Cover_NeedMaintainance.java b/src/main/java/gregtech/common/covers/GT_Cover_NeedMaintainance.java
index 2c60daa6..83c37e35 100644
--- a/src/main/java/gregtech/common/covers/GT_Cover_NeedMaintainance.java
+++ b/src/main/java/gregtech/common/covers/GT_Cover_NeedMaintainance.java
@@ -44,7 +44,8 @@ public class GT_Cover_NeedMaintainance extends GT_CoverBehavior {
     }
 
     public int onCoverScrewdriverclick(byte aSide, int aCoverID, int aCoverVariable, ICoverable aTileEntity, EntityPlayer aPlayer, float aX, float aY, float aZ) {
-        aCoverVariable = (aCoverVariable + 1) % 10;
+        aCoverVariable = (aCoverVariable + (aPlayer.isSneaking()? -1 : 1)) % 10;
+        if(aCoverVariable <0){aCoverVariable = 9;}
         switch(aCoverVariable) {
             case 0: GT_Utility.sendChatToPlayer(aPlayer, "Emit if 1 Maintenance Needed"); break;
             case 1: GT_Utility.sendChatToPlayer(aPlayer, "Emit if 1 Maintenance Needed(inverted)"); break;
diff --git a/src/main/java/gregtech/common/covers/GT_Cover_PlayerDetector.java b/src/main/java/gregtech/common/covers/GT_Cover_PlayerDetector.java
index ee2ce60b..9c61f4fe 100644
--- a/src/main/java/gregtech/common/covers/GT_Cover_PlayerDetector.java
+++ b/src/main/java/gregtech/common/covers/GT_Cover_PlayerDetector.java
@@ -53,7 +53,8 @@ public class GT_Cover_PlayerDetector extends GT_CoverBehavior {
     }
 
     public int onCoverScrewdriverclick(byte aSide, int aCoverID, int aCoverVariable, ICoverable aTileEntity, EntityPlayer aPlayer, float aX, float aY, float aZ) {
-        aCoverVariable = (aCoverVariable + 1) % 3;
+        aCoverVariable = (aCoverVariable + (aPlayer.isSneaking()? -1 : 1)) % 3;
+        if(aCoverVariable <0){aCoverVariable = 2;}
         switch(aCoverVariable) {
             case 0: GT_Utility.sendChatToPlayer(aPlayer, "Emit if any Player is close"); break;
             case 1: GT_Utility.sendChatToPlayer(aPlayer, "Emit if you are close"); break;
diff --git a/src/main/java/gregtech/common/covers/GT_Cover_Pump.java b/src/main/java/gregtech/common/covers/GT_Cover_Pump.java
index 373ad3bd..bef8fd4b 100644
--- a/src/main/java/gregtech/common/covers/GT_Cover_Pump.java
+++ b/src/main/java/gregtech/common/covers/GT_Cover_Pump.java
@@ -68,7 +68,8 @@ public class GT_Cover_Pump
     }
 
     public int onCoverScrewdriverclick(byte aSide, int aCoverID, int aCoverVariable, ICoverable aTileEntity, EntityPlayer aPlayer, float aX, float aY, float aZ) {
-        aCoverVariable = (aCoverVariable + 1) % 12;
+        aCoverVariable = (aCoverVariable + (aPlayer.isSneaking()? -1 : 1)) % 12;
+        if(aCoverVariable <0){aCoverVariable = 11;}
         switch(aCoverVariable) {
             case 0: GT_Utility.sendChatToPlayer(aPlayer, "Export"); break;
             case 1: GT_Utility.sendChatToPlayer(aPlayer, "Import"); break;
diff --git a/src/main/java/gregtech/common/covers/GT_Cover_RedstoneConductor.java b/src/main/java/gregtech/common/covers/GT_Cover_RedstoneConductor.java
index def941cd..9675ef6c 100644
--- a/src/main/java/gregtech/common/covers/GT_Cover_RedstoneConductor.java
+++ b/src/main/java/gregtech/common/covers/GT_Cover_RedstoneConductor.java
@@ -18,7 +18,8 @@ public class GT_Cover_RedstoneConductor
     }
 
     public int onCoverScrewdriverclick(byte aSide, int aCoverID, int aCoverVariable, ICoverable aTileEntity, EntityPlayer aPlayer, float aX, float aY, float aZ) {
-        aCoverVariable = (aCoverVariable + 1) % 7;
+        aCoverVariable = (aCoverVariable + (aPlayer.isSneaking()? -1 : 1)) % 7;
+        if(aCoverVariable <0){aCoverVariable = 6;}
         switch (aCoverVariable) {
             case 0: GT_Utility.sendChatToPlayer(aPlayer, "Conducts strongest Input"); break;
             case 1: GT_Utility.sendChatToPlayer(aPlayer, "Conducts from bottom Input"); break;
diff --git a/src/main/java/gregtech/common/covers/GT_Cover_Shutter.java b/src/main/java/gregtech/common/covers/GT_Cover_Shutter.java
index e6b8aa9b..a936d8db 100644
--- a/src/main/java/gregtech/common/covers/GT_Cover_Shutter.java
+++ b/src/main/java/gregtech/common/covers/GT_Cover_Shutter.java
@@ -14,7 +14,8 @@ public class GT_Cover_Shutter
     }
 
     public int onCoverScrewdriverclick(byte aSide, int aCoverID, int aCoverVariable, ICoverable aTileEntity, EntityPlayer aPlayer, float aX, float aY, float aZ) {
-        aCoverVariable = (aCoverVariable + 1) % 4;
+        aCoverVariable = (aCoverVariable + (aPlayer.isSneaking()? -1 : 1)) % 4;
+        if(aCoverVariable <0){aCoverVariable = 3;}
         switch(aCoverVariable) {
             case 0: GT_Utility.sendChatToPlayer(aPlayer, "Open if work enabled"); break;
             case 1: GT_Utility.sendChatToPlayer(aPlayer, "Open if work disabled"); break;