Originally Posted by wallot

we just were not able to tune the engine during weekend race. it was working great but after few laps it started to stall again after a second and WOT on a straight. it did not do it in every lap. strange. we want back to stock carb settings but no luck. something must be terribly wrong.

I am gonna try carb from the dead engine that worked great before the snapped conrod thanks to a rock accident.