I don't understand what you are doing. With a G62 the plane will be nose heavy with a pull-pull rudder setup unless you hung some other weight in the tail. I know this for a fact, I've been building these for months. There's no way it needs a pound of weight added to the front. Have you actually assembled it and balanced it?

Apparently you are using some type of software program which predicts different results, what I am saying is just forget that and use real-world results.

If it is tail heavy I suggest you check and see if there is something lodged in the tail that would change the balance.

TF