Thanks ClapperZapper!
This is the information I am looking for. I agree that overall weight and balance point is only part of the equation. I need to figure out where to place the additional weight. I agree with your idea about carefully weighing and balancing each of the components on both guns to see where differences lie. There are various ways to add weight here and there as needed. I anxiously await hearing from Don too.

The only constant in life is change.