So I purchased the 8588 wall mount. It will work perfectly.
Problem with install though. I put up the wall plate and mounted the brackets to the tv. When we went to drop the brackets over the upper ridge of the wall plate, they would not drop into place. We even took a hammer and lightly tapped down on the top of the bracket. Even with a 75lb tv and light tapping of hammer, it would still not drop into place.
I then took one bracket off the tv and played with it on the wall plate. Seems like either the bracket opening is to small, the mounting plate edge is too thick or some combination of the two. The black coating is adding some thickness, but you'd think that would come off as I start hammering.
You can see in the pic that it does not drop into place. You will also notice that the coating on top of the bracket is gone from me hammering on it quite hard. Still would not drop.
Anyone else have issues such as this? I already spoke to Monoprice and sent tech support pictures. Even they said it should just drop into place. My wife said we just file it down to fit and I called BS on that since this is a new product and we should not have to defile it to work properly. I'll be getting a new one, but I'm just concerned that the next one will have the same problem.
Can anyone confirm on these mounts that the upper bracket should just drop down completely onto the wall plate with the weight of the tv / light pressure and should not require hammering into place.