As requested, how/where to install the Home Depot French Cleats.
Here is my Jamestown mounted in the theater.
The missus and I pulled the screen and hanged it in a convenient area of the basement that is still under construction. I have made four or five half-assed attempts to restretch the canvas while it was still hanging on the wall. While I was pulling the screen for pictures I figured it was an opportune time to get the damn thing stretched perfectly once and for all. We did. Perfect now. Again, for those of you who didn't read my other post, if you can stretch the screen while it's hanging, you'll get a lot better results. If you stretch it on the floor and get it perfect, as soon as you hang it, there's probably a different tension and you'll get ripples.
Note the shop light above the screen, shooting downward. This is the best way to create shadows that magnify ripples and bubbles. You'll quickly see what needs fixing.
Here is a picture of the right cleat (from the front... Left side of the back). I screwed through the center hole using the existing Jamestown hole and Jamestown screw. Then I drilled the left and right holes and used my own screws, matched for depth.
Of course, you want to either tape your drill bit or use a bit stop like this one to make sure you don't drill all the way through the velvet. It takes some arm pressure to power through drilling the metal tubing, and you don't want to come through the second wall of the aluminum frame with a heavy hand and then whip through the wood frame and damage the velvet.