I am having troubles chamfering some SST sheet steel. I have tried a single flute, a 6 flute chatterless. and a mono chamfer tool, all with the same result of the chamfer not being in the center of the hole. It is in an open set up. I am doing these by hand in a bridgeport style machine. The head is tramed in perfectly. I am running a low rpm (100 rpm) and floating the position. It cuts to one side consistanly. The .800 hole is cut on the laser. I am not sure what is going on, and am getting frustrated by it not working right. The pieces that need chamfering are too large to fit in any of my cncs. What am I missing? Any thoughts and suggestions would be highly welcomed.