This was the problem. Mount didn't line up with mortar.

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This was my solution. Mounting the mount on a board after I drilled holes that aligned with the mortar.

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End product

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65 inch on articulating mount.
65 inch on articulating mount.
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65 inch goes through wall into this system.

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50 inch.
50 inch.
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Four 55 inch TVs mounted individually, together.

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That's me trying to get them to align properly.

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50 inch with hidden cables.

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