I recently purchased a banshee with a stage IV trinity set up. It has T5 pipes, ported cylinders, cases and 17cc dome head. It produces 175 psi of compression. Stock cyc but not stock bore and no airbox. The problem is when in 6th gear on the big end it seems to just fall off. Not bad but I do notice it surging. It pulls all the gears like a beast till you get to the last bit of sixth. I mean its still pulling but you can feel a surge. It has dtock carbs with 350 mains, the float level is good. Do I need a bigger carb maybe. Seems to just run out of gas. I even thought of putting a high flow petcock in. ANYONE got any sugestions? Do I need to trash stock carbs?