Hi, I’m in the process of rebuilding two ajax’s and both seem to have the same problem. The back of the main gears where the mills pins seat have worn and scored the gears. I can’t see any damage to the casings.I don’t think the pin was correct in the mk3 because it’s too loose and isn’t an interference fi and will cotter pins stand up to the job? Have the gears not been lined up onto the pins when the gears have been replaced? Does anyone have any spares for sale or know where they are available please.