Matt I figured it out with the help of the picture you posted. From your description I started wondering if the Old Glory had the sight mounting holes drilled in a different location. My assumption was correct! I measured the middle of my sight bar at 3 3/4" above the burger button hole. I placed your picture next to a pic of mine and if my scaling is correct the Old Glory has the sight bar 3" above the BB hole. That would explain why I had to move the mounting bar for the sight housing to the lowest holes. The center of our sight housings above the BB hole are actually pretty close. Oh, by-the-way I shoot a 4 finger Carter and anchor with the string about 1" below the corner of my mouth, not a "high" anchor at all. I have read that others had problems with sight adjustment on the Allegiance, it looks like they figured it out for the Old Glory. I will have to look if I can drill and tap some new holes in the riser.

Edit - just looked and no room whatsoever to move the holes, the current sight mount holes are directly above a cut-out in the riser.