Boucher - so the 31 to 28 was a pretty big switch?

Preacher - They're uncovered just a hair. I moved the butterfly to slow down the idle and then I richened it up with the mix screws just to give it a little more gas in hopes of helping with the lean stumble.

69 Buick Special Deluxe. Intercooled Turbo Chevy 250 @ 15psi on a stock long block. It's kinda fast.