Thanks John! Yes it was determined through upright & inverted flight. Still requires 15% down elevator or so to hold striaght & level inverted, but if you over do it a little bit, she'll go in to an inverted loop very quickly. She's a wild child, but man can she do some tricks, just wish it was a little more stable. BTW, the WS is 48" and it has the same tail moment as my TopCap now, roughly the same horz. tai lsurface area, and far more control surface area. I think the avitar pic might be a little on her back. This might help. One thing that I wanted to do was drop the wing down, thinking it would increase airflow over the tail, but was advised not to do this by Frank Noll. Everything is in line - motor, wing & hoz. tail. One more thing - airfoil is a NACA 15, a little thin by fun fly standards. Stalls great, but I was going to bump it up 3% or so on the next one to decrease the stall speed. At this point, I'm stuck with trial and error, so appreciate any help!