Well in my case the more you tighten the clutch, the tighter the worm mesh gets.? So either the ring gear gets pulled down a little with a tighter clutch, or at low clutch pressure, the upper bearing is not sufficiently preloaded, and the pressure from the worm pushes the ring gear / axis away.? The way to check is to replace the clutch pad with some imcompressible material and then measure the gap between the setting circle and main body with feeler gauges while tightening the axis.? But I didn't want to bother going thru all the trouble of having the clean and then regrease the shaft to take out the clutch pad.
