Just got these new tires from bicycledesigner.com and when trying to clean up some scuffs and marks from the packaging, I found they have this weird film on them. anyone know how to get it off without damaging the tire? i can kind of rub it off with my fingers but it just beads up and sticks to the tire. i have to brush off the little beads that form with my hand a couple times to get them off. i tried wheel and tire cleaner with a scrub brush and some simple green but the wetness seems to "harden" the film making it slick. really strange.