I have a Pro Design Cool head on my banshee that I cannot get off. I removed all of the nuts off the studs, disconnected the water lines and removed the lid. I removed all of the stud o-rings. Is there something I'm missing? I've never torn down a banshee and I don't want to damage anything. This bike did overheat badly when the water pump failed so that might be the problem. If so what should I do.