I was wondering what the heck those things were for! I got my machine used and it didn't come with any live tools so I got mine on ebay. When they arrived I saw that area on the back of the tool with the pocket and set screws, but without having the pins in the turret I never put 2 + 2 together. Funny thing is I have been running just fine without using it at all (I hope). Looking at it I can't see a better way other than always putting the tool in the same position and machining a non adjustable pocket to replace the adjustable one. How off is it before you adjust it?