Thanks for the info but the C/G is right on.
It was my adding UP elevator that really caused the issue of going straight up and my over reaction to the up and adding down trim to make it a lawn dart.
I have about 12 1/12 scale combat planes without landing gear and have mastered the art of releasing the planes. some I just let go of and other need a shove.
There was no damage to the plane only my pride, but I have a saying that I have use over the years. "I always win". The plane will fly again.

Larry