833 Transmission won't disengage at stop after 100 miles.

I guess you could also buy some keystock at HoDePo at approximately the thickness of your clutch disc, 1/4", 5/16", 3/8", whatever it is. Space 3 or 6 of those evenly around the flywheel clutch surface, bolt the assembly together and then you could probably use your dial calipers to measure the finger height directly from the FW friction surface good enough.