I'm having an issue calibrating Coloram scrollers on an ETC Ion. I am familiar with the calibration process, but the scrolls are so far off that when I attempt to calibrate them, they are automatically assigned to the frame previous. For example, Frame 4 displays what is actually frame 6. When I try to calibrate, the frame is assigned to 3 instead of 4 because I have had to wind back so far on the encoder wheel. Is there a away to assign particular frames when calibrating? I don't think it's a re-tensioning issue.