I have a PRT Alpha with the 7.2:1 upgrade. I cut a rectangle 80 by 40 and noticed the cut was actually 80 1/16 by 40 1/32. I dont think it was bit deflection because the error was directly proportional to the length. The bit diameter is dead on. If there was a runout problem I would expect the rectangle to be undersize.

Has anyone else see anything like this?

Paul Z