well, it works great, turning down the proportion disable the mix of rudder to throttle, but doesn't disable the gyro itself. it's been talked on every other forum awaile back already. knee-height flips i dunno, but i've done waiste high continuouse stationary rolls before, and moderate backward flight, all is very good. my funnels were far from garbage-can size, but mine does travel quite fast on a large radius, all is good. i did have a blow out when rolling from inverted back, dunno why, i suspect it's a glitch, but was never sure cuz i never had a glitch on the tail rotor, i somehow miraculously managed to save it in a somewhat piroflip, and flew the rest of the pack without blowouts or anything doing light 3D. i'm using the black curvy prop, and he's using the square orange prop. my batt is dying and can't hold voltage well thus not able to maintain headspeed well even with bl motor. so i suspect that the tail will hold even better with consistent headspeed with such a light and powerful batt.