Any Other Suggestions...

Fuel sloshing in the tank or float bowls? Does the fuel pressure remain constant during the run? Especially when it bogs?

See, thats what I don't know, the only pressure guage I have is under the hood. I'm going to put another fuel pressure guage up on the cowl of the car so that I can see it as I go down the track, something I have been needing to do anyway.