Clutch Problem. 68 340 Formula S

a problem with clutches that sit for long periods of time (I've had this happen to me too) is the facings on the disc can get stuck to the flywheel and /or the pressue plate and when you do get them broken loose sometimes a piece of the disc material gets torn and stuck between the disc and the pressure plate/or flywheel causing the exact problems you describe. I also see this on lots of cars brought into my shop that have sat for years at a time. Chances are you only need a disc as the presure plate is fine