I have a Polini 177 with longstroke and Malossi reed and I have just ordered a keihin 28. I put it on with the standard jetting, it seams already much more smooth then dell’orto 28, but there is something wrong at iddle can’t find the right set up and it seams a little empty even if smooth at mids and can’t iddle well whatever I do.
My carb set up is:
main 132 (it was 135 standard)
I drive it with RZ rh.
I don’t know what to do and the scooter center where I took the scooter to try to solve the problem it seams they just loose time and then they ask me why I have bought this carb, it is not good for vespas.