Thanks for the harbor freight tip. I actually just built a manometer though. Was pretty simple and total cost was about $5. Basically just an npt to barb adapter sized for the test port of the valve (1/8" npt if I remember correctly) and some clear vinyl tubing I had lying around. Other than that you just need an inch ruler, some water and some food coloring. I can take a pic if anyone is interested, really nothing to it.
Only tested 2 of the valves so far. The output of the first was 4" W.C exactly. The second was around 3.5" W.C. I set them both to 4" for now but I was hoping I might be able to find the recommended pressure for the NG hurricane burner orifice; anyone know?