on my secondary clutch 1 of the three "buttons" are broken on the coupling on the face of the clutch where the bolt goes through to hold it on the jack shaft.....will this affect anything? can I buy just the coupling piece? sled operates as it should... also the clutch as a lot of back and forth "wobble" on the jackshaft... is there a busing that is worn out? where can I find a new one? thanks in advance