Pirate cycles has started selling dellorto sha 15.15. so i picked one up. I had a speed carb with an upgraded air filter on before and it worked great. then i popped the sha 15.15 on there and performance decreased. Jerking through acceleration. has to idle at highest rpm setting. got a shift kit on it and it stalls when rolling up to a stop in either 3rd or 4th off the throttle when before the speed wouldn't even struggle. lower top speed. so i started searching on how to tune these babies and i found that since i live at roughly sea level i should get a 63 main jet. its got a 68 on there right now. you think this is the problem or is there another way to tune these things?
