I just got my wheels XT hubs with MAVIC 3.1 rims. I got Panaracer fire XC pro tires. Im trying to put them on the rims but I see no way to get them to hold air. Or of I was to flat out on the trail how I would ever get air in them agen. What gives this is crap. Any one have experience with tubeless tires? How the hell do you get the tire to hold air?????