Well, the center of the gear is a half millimeter to small. MikesXs wants me to pay to ship the gear back, they will issue a refund then I just need to reorder the part. they refuse to give me a credit of any sort to cover the shipping of the gear back to them or the shipping of a new gear to my house. I totally wish someone else would make an overdrive!!!! I have heard horror stories about mikesxs, I hope they arent all true but I am amazed they wont atleast cover the shipping of the gear back to them or the shipping of the new gear to me. $33 in shipping altogether for a something I had no control of. Hughs Handbuilt is going to look at the gear for me and see if it can be machined to make it work. Hugh, I am glad to have you as a friend!!!!