My apologies to the thread readers for chasing a rabbit, but when a guy posts pictures...

Hey Gray Beard, I had that same plane and did the same mod to it. Well worth the effort as mine only needed the smallest piece of lead to get balanced right. I don't know if you knew this though or not, but there is a weak spot in the fuselage at the LE of the horizontal stab. There is actually very little wood there, and that sharp corner acts as a stress riser. Since you have a hole there anyway, it would be smart to glue a piece of balsa in there with the grain running vertical to reinforce it. Many Ultra Stick .60s have cracked at that spot due to that flaw.