Hi Jim,
I was thinking about you today when I hacked my tail off my plane
My horizontal stab was perfect but I made a dato cut in it before I pinned and mounted the vertical. Not thinking that I had to offset my horizontal stab, I never made any changes to the dato. My vertical was out by a hair, just enough to drive me crazy! No one else could see it of course [:@]
I took these for you. If you do change it, it has to be perfect, I can send you a template of the pieces. Quite a simple job really!