Don't worry I know a good thing when I see it. These old Gravely's are an engineering marvel. It came to a suprise to see that collar inside the taper bore, as the others didn't have it. Well I removed the one from the other Gravely, and switched this bad one the other Gravely, and it actually fit better. Probably the taper was a bit to the large size of the tolerance? So I am happy again. Rotary plowed my garden this afternoon, and all is working great. Thanks for the replies.