40 sized phoenix models sukhoi sensitive elevator at low speed.
I built this plane a bit heavy. It has an old OS surpass 70 in the nose, so I put the elevator and rudder servos in the tail to compensate. I don't have a scale, but it certainly feels heavy for a 40. It's currently a bit nose heavy, but I have plenty of room to move the battery and receiver back as they are both currently in the nose.
The oddest issue I'm getting right now is the elevator gets really sensitive right above stall speed. This is a bit of a problem when landing. During a light flare, the model will want to start pitching (and climbing) at an increasing rate with a constant amount of elevator. Coming in with extra speed and making a 2 point landing instead of a 3 point landing avoids the problem, but the grass strip I fly from is pretty rough and high speed landings cause bouncy problems of their own.