I've been playing with Thor to see if I could fix the AirDog 150 to get closer to 15 PSI. I found a spring at my local hardware store, and it was way thicker, but after a bit of trimming work, I got the fuel pressure to settle at 22 to 25 PSI. Yeah, I know it's high, but I wanted to be sure the CP3 is loading fully and getting good, solid rail pressure. I'm struggling to understand the grid heater light, and it typically trips on deceleration. I'm doing more testing to figure out my issues. Toda