Hello first time posting, I had a 66cc engine on my bike and it ran great no problems except foaming fuel because of a broken rear mount stud, changed the engine to a just broken in 48cc and used the carb from the 66cc now it bogs as soon as you twist the throttle, it's acting lean i figured it would be a little rich... Do I need a different jet or something, I'm running 40:1 fuel mix with Pennzoil Marine premium plus. Any ideas or advice
