Here's a thought- - - -the only time it might be necessary to shim a flywheel after surfacing it would probably be when using the non-adjustable hydraulic throwout bearing that surrounds the transmission snout. Any of the stovebolt clutch linkage with the fork-type throwout bearing actuator and screw-adjustable linkage would make the flywheel surface plane pretty much a moot point.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!