I just picked up a super clean '96 F3 with 35k miles. When sitting in nuetral with the clutch lever out, I get a knocking sound from what sounds like the clutch. Once you pull in the lever, it goes away and while riding it is doesn't do it either. I am going to pull the cover and inspect the clutch assembly for any obvious signs, but though maybe someone would have some insight on this issue. TIA