What its doing: Idles fine can rev through range. mid range bog down and stall. open the throttle without rev bogs down and stalls if not let go. Goes back to idle fine. Will die under load. regardless of temp bike runs the same. choke off when hot What i have done so far. I have cleaned the carb, upjetted to a 170 jet, has screaming eagle pipes and a stage 2 air intake. Just changed the VOES sensor, vacuum lines, fuel line, fuel filter, upgraded to thunder jet accelerator pump nozzle.Replaced carb gasket to air intake. Currently running mystery motor oil through the gas. Checked the spark plugs and distributor. Have good spark. What helps I cover the air intake with my hand bike runs fine no stumbling or popping.