Using an adjustable PCV really doesn't answer my question.
As far as just adjusting the mixture screws only. I wonder if that would still lead to a lean condition at a certain rpm? I understand that the mixture screws have an effect on the f/a mixture up to around 3500 rpm in some cases. Wouldn't the mixture go lean above a certain rpm? I'm thinking that a real fix would be to go slightly bigger on the primary jets. Or go smaller on the IAB's. Thoughts?