A:AnswerYou can slide it on the bracket left and right with some effort (I would recommend 2 people) and after loosening the clip screws but in terms of easily accessible swivel...that is only up an down.
A:AnswerWhen you installed the bracket where is the knobs place to the outside? You should still be able to slip your hands up behind and snug them. I hang them on 55 inch TVs and able to do that.
A:AnswerThis unit is designed to be screwed into the wall studs. Due to the way that the brackets attach to the wall piece, I would not recommend this unit (my opinion) for a "home made" portable cart.
A:AnswerI have installed this same wall mount for two 70" TV's and one 65" TV with no problems at all. It is very sturdy and secure so it will definitely hold your TV based on weight. The only requirement is that your TV needs to have 4 screw holes from the factory on the back/middle of it. This is how the mount attaches to your TV. As far as I am aware, every modern television comes with these from factory.
Good luck and have a good one!
