I didn't take a pic, so I borrowed one of an SB45, they are really similar in the drive assembly, but if you take that bolt in that last pic out, the orange bearing sits on a sleeve that has a pin in the inside of it. This pin sits in a slot in the shaft (pictured) and makes the bearing spin. I had heard from a guy on the Scott Bonnar Restoration FV page that he had found some notches in the slot on his, and the pin was catching on them so he gave it a light file. I looked mine over with a magnifying glass, and that wan't the problem either. That's a really helpful resource as well as here, as the Thoroughbreds use a lot of the same principles as the Scott bonnar 45's.
