Been away from the shop for awhile. Christmas shopping, decorating, several weekend trips in the Citation and some house re-modeling have cut into by build time. Finally found a knockout punch set at Harbor Frt. After much gnashing of teeth, measuring etc, decided the 3 holes across were just too close a fit to work. I believe it would have worked ok had there not been a couple of 7/16” holes already punched in the firewall. I held the template in position with one of the punch sets and match drilled the 6 mounting holes for each eyeball to 1/8"--then used my new punch to cut the 1.1” holes. Test fit the mounts—will work ok. I plan to locate the 3rd eyeball just below the first two.