I finally got a Lmt walbro carb. I plan on replacing my Nikki with it. Its missing a bowl and choke rod (I'm assuming that the name). So I'm gonna order the bowl n get an adj.needle & velocity stack from E.c._ while waiting I was wondering about venting the carb ,seen videos on it but no one really says the point of it._what's the benefit of doin this?any cons? And the same questions about removing the choke. Thanks for any input