Well I got the guts up to try inverted, and it worked! I've been doing 3D on the sims for awhile now, but was just too afraid something would go wrong in real life. So yesterday on my second pack I flipped it to Idle-up, and did 2 FF loops, and 1 stationary backward flip. First thing I noticed is that my CG is off. It tries to roll during the turn. Second thing I noticed is that my tail held very well . On the stationary roll, it was a semi-close call, maybe 2 feet from the ground while inverted, and had to full power out of it. The other two were very smooth, for a first time anyway. I think what happened on the stationary is that the rubber band holding my battery in broke, and threw the CG off even more. I'll have to get some velcro for that. So yeah! First invert!