ok guys, I have a noise coming from my bottom end and can't figure out what it is it sounds like a little rattle when it idles, but give it gas and its not as bad or maybe the pipes are to loud to hear. I just had a port job and had my flywheel lightened with a fresh top end, I though it was my flywheel but checked it and it looks good, checked for slack in the crank by moving my flywheel up and down but no free play, whats up!!! I talked to a guy and he said if my right exhaust was smoking more than the left he said I have a bad crank seal, well it does smoke more so I dont know, would this make a rattle? Does a banshee crank have a seal in the middle of the crank or just on the outsides, never took a banshee apart? Please help, any would be a big thanks.