The aircraft has been balanced and tuned to fly much better than the stock setup, with no trim, by adjusting the CG, tuning the incidences of the flying surfaces and the engine, adding mixes and applying AS3X flight stabilization. Enjoy. Please rate and comment so that I'll know if I'm on the right track with my setups. If I am, I'll keep doing it. If I'm not, I'll take your suggestions to make things better.