I have addressed this in a similar thread but I now encounter other problems in that when running the bike for the first few miles all is well but once warm she begins to run unregularily, popping and cutting out for a second. I am still waiting for my #19 pilots for the premiers and have the needles on the middle notch but still don't think the problem should be getting worse which it is. I've checked for air leaks at the headers but find none. I don't have a balance pipe either. As said this is in the lower rev range up to 3000 which points to the carbs I believe. I fear taking the bike out at the moment.