Okay, makes sense. I understand the theory. It makes most sense when you pointed out that most trainers have significant downthrust because the wing is so far above the engine centerline.

I guess, it's trial and error. Fly and trim. Fly and trim.

You think I should set the engine to 0* to start, and trim from there?

Here's the plane:
http://ecsvr.com/abm/shopexd.asp?id=1318