I lowered the level in the storage tank and increased the solution strength. I got the amps up to 8 and the flow started getting better. I then made a small trip in town to give it time to mix in and when I returned, it looked a lot better. I do have a loop in one line in order to get it through the truck body to my storage tank but it is only about 2 inches higher.
I am going to run it this way for a couple of days and let it burn in and then increase the solution strength again. I am planning on getting it to 15 amps before I call it good.
Oh and by the way, the scan gauge showed my average mileage in town was 20.4 miles to the gallon. Not bad at 8 amps in a crew cab 5.4 engine. I'm very pleased. The only other thing that I am using is a PWM.