[68c10airstream]

I was a subaru mechanic for ages and a gmc dealer mechanic for 10 years and oem parts were almost a must years ago. I suspect the same situation today with all of the cheap parts out there. I also went to auto schooling for 2 years and doing clutch work must be clean (as stated above) and a little detail that is missed sometimes as i watch you tube videos is to finger tighten all pressure plate bolts,and now start at say the 12 oclock position and turn 1/2 turn, now go 180 degrees opposite and then tighten the 6 oclock bolt 1/2 turn, now move to the 1 oclock position, and then the 7 oclock position, and continue completely going around numerous times until snug then torque to spec in the criss cross pattern as above.

Also check out your motor mounts for being sloppy as this movement doesn't hold things steady. Good luck.