RE: DA50 Balance in Edge - pull pull elevator?
I don't know were this balance issue with the Edge has come from. I've had two with DA50's in them neither required ANY weight adding or major adjustments. On my current (2nd) 28% Edge I actually moved the receiver battery back! She flies beautifully. Here is how I set mine up. Keep in mind I am also using the lightweight wingtube and fiberglass landing gear. Everything else is stock.
Hitec 5945 elevator servos in stock postion.
JR8611 rudder servo in rear hole.
CDI unit and 4cell ignition battery mounted on sides of engine box
Slimline inverted pitts style muffler
Receiver and receiver 5cell battery located just in front of rudder servo
Two Hitec 225MG mini servos for throttle and choke located just aft of second (main) firewall.
I don't even know were the CG is on this one, but it flies beautifully and I could probably move it back a tad more. On my first Edge I had the exact same setup but with the receiver battery on the floor in front of fuel tank (just over gear) and the cg was right at 4.5-5"