Have any of you guys had problems installing the fuel tank? I'm in the process of building mine now, and by the way, the instructions stink. You get a bag full of hardware and no mention of what goes wear. I've also heard that the written CG is wrong. Back to the fuel tank, it's wedged into the engine bulkhead and it would pinch the fuel lines shut. Seems like you have to drill the hole out so the stopper will fit through it. Also the tank is hard against the top and bottom rear bulkhead. Wont the engine vibration cause foaming? does this part need to be clearanced too?