Kind of at a loss here -
KR200/KRC1. I had a program moving 100mm on the Y axis (a relative LIN movement). After recalibrating the frame (using the 3-point measurement), that 100mm is now more like 97mm.
What can cause the robot to lose the correct spatial measurement? The new frame is not much different than the null/default frame, just compensating for a surface that's not quite perfectly level.