Someone else bought a replacement clutch disk from Greenfield - a price of $120 for one disk was quoted in an earlier thread on Outdoorking:
https://www.outdoorking-forum.com.au/forum/u...amp;Main=6920&Number=34937#Post34937I agree that a new disk will result in a better job than re-machining the one you have. My inclination toward remachining stems from having a 14" lathe I rarely use, so machining would take far less time and effort than chasing down a replacement part, plus it would cost me nothing. If it didn't work out, I'd shrug and buy a new part. You may have a point regarding the minimum shim stack issue. Using an ultra-thick clutch lining should overcome it though.
Post-edit: I believe the shim stack gets thicker as the clutch and lining get thinner, so there should not be a shimming problem when a clutch disk is re-machined. The main issues would be the strength of the thinner disk, and its resistance to heat distortion in use.
Remember, if that is what the pulley side of that clutch looks like, the opposite side is probably just as bad under the glued-on lining material, if it has previously been run without lining.
Your other disk looks OK to me, just from the photograph.