I want to install a new clutch with more surface area on my 100 inch revtech custom bike. it has a 6 speed tranny. The parts books mention options that provide an additional friction plate and an additional steel plate. 7 and 9 as opposed to the stock 6 and 8. How does this work. The total thickness of all the plates would increase, no? Can I just replace the orig clutch with the new plates? Can I get all the stuff off thru the derby cover or do I have to remove the primary? | 
