
My TV is only 12# but uses M8 mounting screws. The hardware kit came with M8 screws, which is good, but none of the holes in the bracket or slots in the extensions went through the M8 screws. The Dremel sander opened up the grooves where needed, but it was necessary to loosen the nuts holding the extension in place to align the arms with the screw holes on the back of the TV. (I tightened them after the TV was installed.)

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