Nannn, get a carbon fiber clutch disc hehehe, that will grab nice and tight.
Just kidding, thinair is right. Change the clutch with OEM and check the transmission for leaks, best time to change the transmission seals and change the transmission fluid with Redline MTL. While you are at it, check the flywheel also.
I am installing my Sachs race clutch, it isn't a bad job.
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'85 Euro 635csi M30 Turbo race car
'92 525i Touring