Originally posted by InitialD
Justrace, yes if you use ordinary type automative filler gauge, the problems you mentioned can occur.
But the one I use looks like this (pardon the link as I cannot find any pics of it). It acts like a flywheel holder and the graduated slots in the bottom are where you fit the thrust bearing collar to measure the clutch gap. It can measure 0.4 mm clutch gap till 0.9 mm if I'm not mistaken. The way the gauge is made on the wrench by sliding the different thickness over thrust bearing to measure the correct clutch gap, it's the same way as putting as much shims until the clutch bell is barely tight.
But I'll try the method you mention and see if it's any different.
Initial...Please try both ways and tell us what you come up with. Hopefully it's the same so I can save $19