Hey guys as y'all probably already know I have a 1996 max IV. I'm in the process of going through the entire machine and replacing everything that needs replacing. I am waiting on my bearings to come in and when I removed my old bearings I noticed I have inside bearings and my axles are solid, is this factory or has someone previously upgraded it? Also I talked to Greg at buffalo bearings and I told him I wanted to do away with my locking collars and he suggested a bearing with set screws? I ordered what he suggested. Any pros or cons I should know about regarding these set screw bearings??