John, I hope you will not mind me picking up on one point - a slipper clutch in a bike is a very different piece of kit than a Rotax clutch - greased or otherwise! It is actually reverse torque from engine braking that the clutch slips for, to stop the back wheel locking up or skipping when you shut the throttle on a high comp four stroke, needing quite a complex bit of kit to cope with the forward controlled slip to no slip / backward free slip, hence the big price tag.
Back on Rotax - my only real concern with the "allow greasing legally" view is that if the old clutch performs much better than the new one when lubed, those who bought new will be at a big disadvantage, and the unreliable old version will become the only one to have...
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