I am extremely confused. I just got off the phone with Sure Grip and he told me that I can put skateboard wheels on my skates. I have the magnum plates and he said my axle is 9/37. He explained to me that all bearings are the same size except for the middle. He said that I could just pop my bearings out of my current wheels and put them in skateboard wheels and I would be fine. He also said they make a sleeve for axles so that you can fit skateboard wheels on them. I think I used them years ago. Please tell me, if you agree or why I would not be able to put skateboard wheels on my skates?