Just had the carbs rebuilt, and a new fuel filter installed. Compression is 120 across. Starts right up everytime no matter warm or cold. Lean into the throttle, and about 4000-5000 rpm, she starts to bogg down and wants to die. I have to feather the throttle for about 5 seconds. Then she takes right off. Then performs fine, until you shut it off and let it set for at least 20 minutes. Then when you take off it will bogg between 4000 and 5000. I'm clueless. Any thoughts? I appreciate your help!