Hi Guys my carb not sure what number it is but as any one used a different carb with flote chamber. I have had 2 mosters, 2 rakets, 1 manari, 1 corse air, and now polini and i have sold them on only because the walbro carbs have always let me down! I have bought setting kits done pop off preasure etc i think they suck, and yet again on my polini 110 gone to pot. any other carb please advise. cheers Dean