Hi all. Having some issues with my clutch replacement process on my 550. I purchased an OE Ferrari clutch disc/PP kit (194775) and a Hill Engineering TOB. I bought the clutch from a shop owner who was going to use it for his personal car but didn't. He is familar to many here on FC. I took the parts to my local Ferrari tech (Well known and recommended guy with 35 years Ferrari experience) and after the job was done he said it was impossible to engage reverse with the engine running. His inspection indicated that the pressure plate surface had some runout in it that was not allowing full disengagement of the disc. I spoke to the guy I got the clutch from and he insisted that a new flywheel is required on a 550 clutch job for this very reason. So who is correct? I'm kind of stuck between two people here (Both of whom are reputable) and all I have to show for it is a broken Ferrari.