Years a go replacement clutches were "remanufactured". Every time they were rebuilt they would grind down the pressure plate surface. After several rebuilds the distance
between the plate surface & mounting surface would increase. That moved the disc closer to the flywheel & as soon as the disc wore down a bit, the springs rubbed the flywheel bolts besides starting to slip because there was no clamping force left. The same goes for the flywheel being surfaced too much. That moves the center of the disc closed to the bolts.
You had to check one out before you bought it to make sure it was any good.
Thank god we have complete matched units now.
George
Last edited by Wrenchbender Ret.; 02/22/2023 3:42 AM.