now i feel dumb. i sanded my fliskits cheetah (purchased at naram) primed it sanded it primed it again sanded again but i was stupid and missed a long streak and didnt sand it (i was using kilz and it gets really bumpy) then painted it now its rough on one side. so am i able to sand off something thats already been painted and paint over it again. if not i'll live but id like to know.