I just read your first post again. 19mm intake, 17.5 carb with reeds.
I think a bigger carb would solve all your problems.
I had a 17.5 on a polini V1, no reed, and it was too small. Always too lean. A 19 opened it right up.
On my V1 BRN 90 kit, with reeds, I'm running a 23 CP. And it rips. Jetted at 110.
I know I'm comparing puchs to V1s, but it seems to me you're just over jetting a small carb when a bigger one would work much better.