650cfm QFT Carb Tuning / 383 / 727

Hi Mattax,

Many thanks for this great answer.
I may not be that far from a good solution. I think that without knowing I've been trying to compensate a lean condition setting bigger pump nozzle whereas it may come from the pump shot cam.
I'm going to go from 62 to 64 on primary jets and try to come back from 42 to 40 (or 37?) on the primary pump nozzle but changing the cam from a pink to a green or blue one. I'll keep you posted!

Thanks again for your help!

Nicolas