I am thinking that the problem might be an air leak... I am just confused why the it happens once the bike is warmed up. You might have an airleak betweek the airbox and intake manifold. Check the straps on the carb insulators and make sure they are snug. Make sure the air box is sealed well and that all the air hoses are connected correctly. Do you have a Cali model or 49 state model?

 

wouldn't the air leak problem only do it when Im moving though? I do not think it is a cali model. I looked at all the hoses when I took the carbs off and everything looked good. All the hoses were attached, not dry rotted or loose... And its weird because it can run good, then it will get warm and then it will start acting up. Then to keep it running I have to keep it reved past 4000 RPM other wise it will start dieing down and cut off. When it does this thought it isn't running on all cylinders. Then ill ride it home and hopefully make it and at a stop light it might randomly run correct again but only for a minute or till I take off again... I am STUMPED!!!