Wow, thanks for all the input! I'm going to stick with cleaning the clutches, but I'll try these alternative clutches to see what kind of difference it makes. I've also ordered an old fashioned beam 1/4 torque wrench, and when conditions are not good for photography I'll try some tests on my own about tightness. I previously did some simple tests and found that looser was better for the clutch (within a limit), but I did not do this in any sort of a repeatable way. I'll try again next time, adjusting tightness in a repeatable way, and checking the RMS during the same session.?
Jamie
Jamie Amendolagine