How old is your tranny? Cause your gears could be partially stripped.... for your sake I hope not, but that happened to my reverse, i couldn't get it into gear because one end of it was rounded. I ended up having to replace my entire tranny (cause it was cheaper than a rebuild). I don't really know much about the clutch so i dunno if it could be the throwout bearing or not. But hopefully my 2 cents can help you anyways... good luck man