I have four (4) SB 9/10K backgears for sale. They are priced way below anything found on ebay. I have been selling the small gear kits to repair these back gears. As you can see they all have been repaired with kits I sell. Two have the eccentric shafts with them. I have been asked on numerous occasions if I would make the large gear in kit form. That is really cost prohibitive. If you have a back gear with a broken tooth on the large gear here is your chance to get an excellent replacement. The cost is $120.00 shipped. Only two have the eccentric shafts but all are the same price. PM me with any questions. Paypal, check or money order is OK. You choose. First come first served.