I have been working on it pretty heavily since I bought it several months ago. I put a 114hp zipper big bore kit on the 912, VG's all over the wing, and under the horizontal stabilizer. Much larger tires (21x8 mains, 18x6 nose after modifying nose fork), larger propeller (72" KOOL scimitar) etc. Exhaust mods, intake mods, and lots of little stuff like several instruments it didn't have, a manual leaner for the carbs etc.
Anyway, considering the altitude, and smaller/faster wing, this thing is really performing well! Flying weight today around 1025lbs (I'm tall and not light, 2/3s fuel etc.) Someday I'd like to take it down to sea level or close to, and see what it can really do!
Thanks for watching the video (shot on a Sony action cam, so the wide angle kind of throws things off, we measure the take offs in the 220-240ft area... if I went with minimal fuel, and used a flat strip, I would think 200ft would be totally doable even way up here. Today was seeing around 1000fpm climb sustained, I have seen up around 1200 at best and a little less weight, so there is room to cut down.. but today is more of the norm)