My best friend and I bought this BobCat 743 "Man's Toy" (as my wife calls it) to rebuild and use (play with) when needed. Anyway what I am interested in finding out right now is about the teeth on the bucket. I'm putting new teeth on now and find that some of the old teeth are held on with standard roll pins and some are held with what I've heard called "spiral pins". So I thought rather than go the trail and error way, I'd just ask you folks which is better to use in this case. Thanks for any help,,,,Chuck