sorry to post twice in a row, but I'm confused about something in the orig. I have to push the pedal all the way down to get the drive shaft to totally stop spinning, but if I push it half-way I can shift gears without grinding. I guess I don't really understand how the clutch/driveshaft arrangment on the orig is supposed to act. everything is lubed,greased. How does one properly adjust this or is mine ok. my other original seems to be the same so I don't know. very stumped,sos