Harv, If you call Martek in Marmora, they have a lot of brackets and parts in the basement. Whenever they do a flush mount, they have a bracket left. They may have a dead unit with the knobs, too. Also, I'm pretty sure those units are made specifically for c-map OR navionics. If the model number includes NT it takes C-map. Otherwise it's Navionics. As far as I know they are not interchangable. Good luck.
Tight Lipped.......Thanks for the link. I have found out that my unit takes the navionics chips, not the c map as I had originally thought.
Spooled.......Thanks, I will let you know when it arrives.
Aimless.......Thanks, I will check with Martek. Thanks.