can you explain a bit more
You ave fitted another carb from the same model I am guessing? was it not a autochoke before? why did you fit this?
When you say revving do you me screaming revs or do you mean just slightly?
It sounds to me as though the slide is fitted incorrectly if I were to hazard a guess. Take top off carb and make sure you get it the right way round. There is a pin and the slide will have a grove where this fis.
bb
March 2010