All Parts have Same Depth Problem
1. Reset the Drill position in Drill Holder at high point.
2. Reset the Positive Stop tension on the Center Tool Slide.
NOT All Parts have Same Depth Problem
1. Take samples to isolate the problem spindle.
2. Check Collet Tension to be sure bar is not being pushed into Collet by drill.
3. Check drill sharpness to eliminate pushing of bar.