Hi Tiger, it is a bit complex as I have tried a few combinations and it also involves fitting an idle adjuster screw in the cap, but seeing you are in Melb it might be easier to show you, once modified they are great,with full throttle control. The thing that is killing me with these carbys at the moment is the float needles sticking up and not allowing fuel to flow.
Anyway just to give you an idea as to what I do to the cam is cut the lumps and bumps out of the cam so it can operate smoothly. The carby is a brilliant rugged design, except for the cam design with lumps, the bizare kill switch setup that often takes many goes to get it to work and the problems with the float needles sticking. Get past those problems and best carby ever designed

Last edited by NormK; 18/12/16 07:03 PM.