Ahh. No I've actualy seen a Spirit 2m sustain inverted flight. Sure it's sinkin fast but not as fast as a stall or spin. It sure 'jumps' right back real quick with a twitch of left or right. Here's sumthin else people don't believe until they see it. OUTSIDE LOOPS!. You should hear that wing roar when its over your head upside down and pulling negative Gee.

Sam (my friend) has made two minor in terms of building modifications. He set the incidence to 0 rather than the couple degrees of positive called for on the plan. He installed the aluminum wing joiner intended for the two piece wing but glued it solid.