I'll probably grab some self tapping screws to put those in there. I'm not looking forward to the rotation for the projectors and praying it doesn't move on me trying to get everything set up. My test housing that I just went for it and started drilling the holes for the screws, my rotation definitely needed to come back clockwise at least a good 5-7 degrees. Thank-you for your input.

 

Locking in the rotation is definitely the hardest part on these.

Good luck, and post some pictures when you get it all done!