If you want to see the stupidity of using a carb that is too big for the engine, look at the 340 Dyno test at Nick's garage, 4 days ago. 800 Edel AVS, 750 Edel AFB & 800 TQ tested. The AFB made more tq & hp.
Nick would have to tune each carb to the nth degree for that test to have an real validity. The results from this one test session are not definitive proof of anything .