I want to get a moped up and running again...the closest I have to a running ped is a Moby 51v with a GR1 top end, a stock bottom end (I think, it's been so long since I built it) , Artek crank... I have a gianelli exhaust for it as well. I never had much luck tuning a VM16 that I had on it. It ran okay but something was always off. I have a feeling the carb was bunk because it was actually JB welded in some spots by the previous owner. I'm looking to try another carb just for fun, what size would you guys recommend? Been even thinking of getting one of those Lectron carbs .