(2)450 DP's vs (2)750 DP's

The increase in the mains fuel does two things, it fattens up the cruise afr (youre fairly lean there and have lots of timing) and closes the gap between mains and transfer slot. The transfer fuel is tricky, if you can stand a lower idle, you can kill some transfer fuel by closing the throttle blades slightly and re adjusting the mixture needles. (If you don’t like the lower idle, crack the secondary side open a touch) Although that’s more of a fine adjustment. .078 too .065 is a big jump and I like making big initial changes but I don’t like giving numbers when referencing carb tuning. Every single one I’ve ever tuned is different and don’t want people seeing numbers on the internet saying “it works for him”, that kind of thing.