I am using a G 62 and came in tail heavy.There was an earlier thread on balance and the general consensus was the factory cg was more for 3D. I ended up balancing 1/4" ahead of the wing tube but I have'nt finished trimming it out yet. I'll slowly move cg back until I'm happy with it. I had all servos in the tail so I moved the rudder servo to the cockpit area with a pull pull system and moved the battery rx right behind the motor box and balanced with no added wieght. Mine came in a little heavy @ 16.75 lbs . It was kit built and I'm not sure what the arfs are coming in at.Ive only got 4 flights on it but it seems to slow down okay for landing . In the air it handles everything Ive tried so far (no 3 D yet).

Good luck with yours
Randy