[Gaz64]

Two variables swapped at the same time, both towards lean.
I run a F16 in a 1500cc 4 cylinder of mine (DCOEs).

Eljaro is on the money, the old rule of main jet + 60 is out the window.
The air corrector determines main system start point as well as top end.
Just imagine a 300 main and a 360 air, won't work.