Karl,
I aggree with you. I could see it from the get go, that this plane is just to big for a 91 anything. As posted earlier, I put a YS120NC in mine, the tank is moved back to right over CG, the throttle servo and Rx is right in front of trailing edge, battery is in fuse just in front of the single forward servo in tail (I cut a door and taped it shut). I don't know where my CG is right now, but it's not nose heavy any more. I am bringing lead to the field this Saturday, because I like my planes tail heavy, but this plane does need a 120 minimum.
By the way, you've got balls hovering that low with somethinf you have to "fly out of a hover".
DKjens