RE: Norvel Engine FAQ
Justin, I know this may be more than you want to get into, but it is honestly best to work on engines in a test stand, not mounted in the plane.
The process is one of isolating the problem(s). The fewer variables the easier this will be. Also, you can examine the tank and lines much easier and experiment with raising and lowering the tank's centerline in relation to the carb spraybar. It is also easier to make engine adjustments on a stand.
FWIW, I always break in and set up my engines on a stand first before I ever even think about putting them in a model.