Thanks for the info and the link. I will definately check it out. Not for this model, but I am planning to try my hand at a scratch build from foam or coroplast, so it will definitely come in handy.

I checked the stab and it is properly squared. The nacells are as close to spot on as I can get them with this foam. The only thing I'm not sure on is the wing camber, but since the model is flying well I don't think I'll bother experimenting with shimming it.

So I guess the short answer is:
Since my model flies well once I trim in a little up elevator, then everything is fine and I shouldn't worry about it. Just trim in the required up elevator and get out there and fly and have fun. It's just a park flyer foamie, not a pattern plane, so if it flies well for me, then there is no issue.

The little thing actually flies really well considering how underpowered it is. It will loop out of a dive, but falls out of the loop if you try to go from level flight (obviously an effect of it being underpowered). It rolls well, but does tend to dive excessively when inverted, but I would expect this given the wing design on the GWS A-10. It recovers quickly from induced stalls. It flies so slow and stable while still giving me reasonable control given the limited airflow over the control surfaces with the EDF.

Thanks for all of the feedback and info gentlemen, you have been a great help.