Inverted flying and dive test really only test one thing IMHO, the positive/neutral stability of the airframe at a given CG. CG's are largely subjective and everyone mileage may vary. Im all for a rearward CG. I love the payback in light lift but not so much when coming home from downwind. Some others swear by just a few clicks or up or down elevator trim... For me, its really all about how the plane reacts on tow. If you cant come out of the hand straight and on rails then there in no way to effectively execute a turbo tow, not to mention the other obvious safety factors. Im happy at 130, gonna stay there for a few months and see how I like the new MK 2.5 4.0 airframe. Cheers
BTW, good luck to all in TX this weekend!!