I clipped my throw out bearing in my fork last night and snapped the fork onto the bell pivot ball.
The first thing I noticed was that the bearing wasn't centered in the center hole of the bell.
Second, I noticed that the bearing can't really pivot on the end of the clutch fork, so as the fork travels, the bearing doesn't remain parallel with the pressure plate surface. Won't it have uneven contact as it's depressed?
Third, is the bearing really supposed to just sit down on those spinning diaphram blades? Doesn't the bottom get all chewed up?