Here I am, once again during cyclocross season attempting to mount a set of Vittoria CX tires to my Stans Iron Cross rims and, once again, it has turned into an hour long cursing session because I can't get the fuckin thing on the rim. I find that I have less than a 50% success rate when mounting new tires and, most of the time, it's because it's too hard to get it on the rim. I get it within a few inches of fulling seating, then i lose a little grip and the other end of the tire slowly unseats before my eyes. It's infuriating and, even if I do succeed, it always ends with sore fingers and wrists. Is there some trick to do this? Is there a machine I can purchase to help? I don't care what it costs.