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Sorry I didn’t want to make this confusing. Knowing I would not use the tv again I broke it off the wall to find a piece plywood (larger than TV) mounted to the back of the tv and 3 screws on the top and 2 screws on the bottom holding that plywood to the wall. I believe the 3 top and 2 bottom screws that you can barely see around the vinyl muff will remove the TV. The picture i sent is the new tv mount and new Velcro sub mount, note completed pic.
Your new setup looks amazing, and more importantly, it looks factory! Well done sir. I'll post some pics of my setup and see if you have thoughts on how best to attack it. I also just received the searay cockpit tv mount I ordered, so it looks like I have to get brave and drill a couple of holes in the arch here soon. Like you, I wanted the cockpit ttv to mirror the factory install so I bit the bullet and paid Sea Ray way too much for their mount.