Ok this one really has me confused! My Series 1 has an issue with milling the inner diameter of any circles. I’ve tried conversational, pocketing, profiling both conventional and climb milling and my inner diameter is always smaller than expected. My circles are perfect when milling to a certain outer diameter and other profile cuts. I’m not aware of any cutter compensations in my programming or in the machine itself. As an example if I mill a circle with .600 diameter, it ends up at .591. Any suggestions on what to look for or test?