That is what I ad finding. I have several axles, adapters, and even stock joint axles. They all fit in the old ones but not the new ones. The one that do not fit are by far cleaner than the ones that fit, no rust, no hardened grease nothing. They have all been in the same garage for weeks so temp in not an issue. I am going to try and contact the guy I bought them from. Just curious since I machined them to fit so I can't send them back.