GT240 30mm VHSH set up

Anyone else running a 30mm VHSH carb on the 240?
Got it running with the recommended Fran Race exhaust and started with a U16 needle which was useless.....
Just interested in what jetting others have arrived at?
TIA.
Got it running with the recommended Fran Race exhaust and started with a U16 needle which was useless.....
Just interested in what jetting others have arrived at?
TIA.