Hello. I have a 1997 GP1200 that idles fine but won't go past 5-10mph. I have a hole in the pipe outlet, looks like a cut, so I removed that and have one on order. Could the amount of smoke that was leaking due to the hole choke the engines oxygen supply off and be causing the problem. Carbs look good so I don't think its an issue there. Any advice would be much appreciated.