I remember more about the model now, after watching your taxi video. After moving CG forward, I was getting nasty landings, as in, MLG touches down, and next maneuver most predictably slams nose downward due to (now) a MLG position waay aft of the CG. So careful on landings. [8D]

I also looked at some of your HUD videos... Boy I shouldn't have looked at that! I remember using HUD video stuff for a UAV demonstrator ~15 years ago... A fun project, and I always wanted to try that again on my own...