OK , I know this is a wierd one..... I pulled my cas cap vent hose and replaced it with one of the short, stubby units that have the billet cap piece. After riding for about 20 min, it popped off....purchased another (different brand) and the exact same thing happened. I made sure it was on tight, but its as if the vent is not allowing preassure to escape. Anyone else ever have this problem?