Got some baselines at the 1320 now some help

IMO - the line from from tank to pump should be -12, from pump to regulator -10,. -8 is good for regulator to carb bowls. It sounds like it's running out. You'll know if you add jet and it goes lean earlier.
You should also make sure the flow rate is what it should be. Take the carb lines and run them into a bucket. Turn on the pump and time how long it takes to fill up 1/5 of it.