Thanks Vccomm, I didn't really want to take the governor off because you can never be sure you'll get it back together again. With other carbys I've done I always give them a bath and that way I know I'm getting all the crud out. I didn't do with this one because the carby cleaner may have affected the plastic governor. Butterfly is opening ok, will have to look at the jet but thought if I'm going to take the carby off again I'll give it a good clean.