I dug out my spare clutch pieces, out of the 20 or so steels I had, they were all the same near as I can figure.
I also I had a different style clutch center in the mix.
I looked it up and its the difference between S2 and "S2-A"....one has an outer ridge cast in, the other would require that "outer" steel plate. The one that requires the outer plate was the one I had in there. I did have a regular steel plate to begin with on the stack.
With the S2A version, you have that surface cast in and start with a friction. I would suppose the S2A was an improvement, as the S3 was like that as well, maybe Ill put that center back in there. That would also take the "outer clutch plate" out of play.
