Ok, so following the advice of some folks I hold in high regard in the engine world I removed the primary PV plug from my carb, re-jetted it and put a 6.5 PV in it. I did the whole vacuum gauge at idle, cruise, and the hit of the throttle. My boat ran like total shit. Backfiring through the carb, lost almost 5 mph, just not a good day. I put it on the trailer, took the PV out and reinstalled the plug, changed my jetting back to where it was. Boat runs perfect again.
My question is this, why the hell doesn't my carb like the PV? Holley HP950 choke horn milled & blended, worked by C&J engineering. I'd love a tad more economy but not if I have to deal with the headaches.