No the tank isnt baffeled, if i had even the first sight of fluctuating fuel press I would baffel or run a header tank, I never race under 1/2 tank of fuel and I have never seen the fuel pressure move more than 1.5kpa away from 20kpa ( put the gauge in the car T'd from between the two carbs )

I would lean towards flooding as I dont get any popping out the carbs, just a loss of power.

Anyone have any pictures of the above mentioned modifications to the jet's/air inlet vents?

I run my car in Marque so its not massive G-forse either, we have to run street tires granted I am a bit of a lunatic.