I am having a strange problem. I have a chopper with a 124 inch S&S. I just reciently performed some changes on the bike including a vance and hines exhaust, new spark plugs and 8mm ignition wires. My problem is now that the bike is all back together the front cylinder is getting very hot almost immediatly after I start the bike and is turning the plug black. The rear cylinder seems to be running normal. The bike sounds like it is running great though. Please Help!