You're pretty sure I got 5mm to work with on each side? BTW, how much of a press fit should these bearings be? And I don't really need 3 rear bearings, cause it's gonna be a front hub. Isn't one of the rear bearings larger than the other two? Or are two of the big and one smaller? I guess I need two of the smaller rear wheel bearings. If they only come in a kit I might call-up my local bearing place and see if they've got anything in stock that is close (hey, I'm machining it to fit anyway). The ID is 20mm right?