What do you have your barrel valve leakdown set at, I would suggest around 22 lbs. also i would run a highspeed bypass valve set around 70 lbs. The nozzles are big enough (IMO) The nozzles are flowed at 65 lbs.
I would think with a -1 pump you should be running a pill some where around .080 with that size motor.
5 gals of fuel in 10 mins. is definately excessive, also when idling i would suggest you close off the fuel shutoff 1/2 way. I and most of the people i know do this and drive up thru the staging lines with the fuel 1/2 shut off, this helps with the milking of the oil, and puts some heat in the motor before the run.
JMO
Zip.