Found it:

 

 

Any shop that doesn't do a step re surface on a stepped assembly, has no buisness being in buisness.

 

The problem with resurfacing a step flywheel is, if you don't know (or do not look up) the proper depth specs, a worn flywheel surface will be very misleading.
They typically take an initial measurement to determine depth, and since the bosses never wear out, the reading will be off.

I know, because first time I had mine resurfaced, my brand new clutch barely lasted 20K Km (12K miles).
I measured the depth and it was 22 mm.

It was just a matter of finding the right machinist (pictured a couple posts above) and things are good atm.
(They charged me $23 for that resurfacing job - that includes assembling the clutch on a specialty bench and checking/verifying proper engagement/disengagement)