I guess your bike would be fitted with a Scott carb originally (?!?). Later on they used Binks (2 jet and 3 jet). My 1923 Scott has a 2 jet Binks carb. This works quite good throughout the rev range.
I have heard form a guy that swapped the internals of a Binks 2 jet for those of a Amal 276. That way you would get a needle carb in a needleless carbs body. I will look into that this winter, just out of curiousity.
So you see, quite some possiblities! And yes, you will not find a suitable Binks on every streetcorner…
It seems you will have to use air and throttle for an optimum result. Just like it was done in the old days I guess…
I had similar problems on my 27 Flyer, more info in this posting
Might help a bit but I guess you already searched the forum. And in my posting I did not find a real solution either. I do not remember how or when but somehow my Flyer ran fine afterwards.
