One more tip to add if you end up pulling clutch housing, discs and spring- be sure to mark the components so they stay aligned in the same way the were removed. These thinks are factory balanced by drilling metal off here and there, and can be tricky to figure out if you lose track. The factory did put some paint to mark them, but mine was pretty much undecipherable. Also be careful if you use a puller on the clutch housing, as I accidentally pushed the brass bushing that accepts the end of the push rod way back into the output shaft (then had to extract with bolt and slide hammer, and of course replace).
