I'd start with the thrust angles on the engine first....I'm sure you're going to need both down and right thrust... I'm not sure the exact numbers for the USLite But on the original US120 I had 2 deg down and 2 deg right.. Proabbly could have use more on both.

It's far easier (and easily reversable) to play with the engines thrus line VS changing the wings incidence (BTW did you ever measure the wings incidence??? I'm guessing it should be around 0)