I'm a relatively new owner of a '92 512TR and the clutch is not releasing all the way. Bleeding it helps for a few days and then the pedal is down again. Finally fluid leaked from the clutch housing, so probably the seals on the thrust bearing (throwout bearing) need replacing. From the Parts Catalog and the Workshop Manual I see that the fluid enters the clutch housing, passes into the bushing supporting flange, and into the thrust bearing to operate the fingers on the pressure plate. I am over 400 miles from Ferrari dealers in Denver and Dallas and the same distance from an independent Ferrari shop in Kansas City. My son and I both have auto and aircraft mechanic experience but are not Ferrari mechanics and don't want any surprises, so need suggestions from anyone who has done the repair or had similar clutch trouble. It appears the transmission oil and gearbox oil will have to be drained before pulling the clutch housing because of the output shaft into the gearbox and the pilot shaft between the gearbox and transmission. Is this correct? The Workshop Manual is very vague, just stating it is necessary to remove the muffler. I note that later serial numbers of 512TR's use a different thrust bearing with six seals instead of three like mine, and a different bushing supporting flange. Is my problem common enough to justify this change or would the cost be prohibitive? Any advice will be greatly appreciated. I love the car and want to get it on the road again. I had a major service with belts, new clutch disc and many more items recently but apparently these hydraulic seals weren't replaced.