Go down to 6 1/2 or 7psi. Change the jets back to 180 squared, and try it.
At 8 or 9 psi your possibly misting fuel into your plastic vent in your bowl. With a BG 400 it can maintain 6 1/2 psi. 200 jets are way to big in my opinion.
Go down to 6 1/2 or 7psi. Change the jets back to 180 squared, and try it.