A:AnswerI wound up buying a Universal screw set for SAMSUNG TV's from Ebay tat came with washers and spacers
and mounting the TV was no problem at all. made things really easy
A:AnswerThere are options to customize the captions, including the size, background, opacity, colors and so on. Very satisfied with the ability to customize the closed captions
A:AnswerThe remote pairs to the individual TV automatically. They pair when setting it up. No need to use a or b. I bought two and not an issue whatsoever.