Kevin,

I don't believe it is an aerodynamic issue. My Bobcat has been in every attitude imaginable and a high and low speeds. I fly the snot out of it and have never felt any sign of mushiness on any of the surfaces. I had several gyros puke over time but that's another issue. There is no doubt if I was building another Bobcat I attempt to cram 8411's in the stab but I doubt that I will be hacking mine apart after this many flights.

I do fly 6 volt pack and I use a 5.2 Volt jaccio regulator.