With the power you have, that plane should fly well. I did notice something odd when developing my .45 glow version. I too made a full scale mock up in blue foam. I carved the entire thing including using a hotwire to cut an airfoiled wing. It was primarily a test glider and then converted to electric. Oddly enough, the plane would just not glide until I placed the wing upside down on the wing saddle. I initially had a somewhat semi symetrical airfoil that should have created lift but for some reason did not. I fliped the plane to inverted and gav it a toss and voilla. She glided right accross the gym floor. Perhaps the shape of the carved leading edge or airfoil is messing things up. On another note. My gas version has about 3 degrees of positive angle on the main wing, This puts the thrust angle at 3 degrees to the main wing and I believe that aids in keeping the nose up under power. If the motor broke off during the maiden, perhaps when you glued it back together, you inadvertantly glued in up thrust on the motor. This would account for not being able to get enough up elevon to fly arround. It makes sense because you seemed to be able to fly arround on the maiden and I dont think you added too much weight in the repair. Let me know if these ideas help. My next plane is going to be a 36 inch depron Arrow. I have found a wonderful and cheap motor and speed controller for this size plane. Auw should be 2.5 lbs.