It would appear that when the medicine cabinets were installed there were 2 problems....
#1. There were no pilot holes drilled. THe screws sere simply run into the studs.
#2. The original installer, or someone else along the life of my house, stripped the screw head on the lower left screw on the cabinet on the right.... I had no choice but to use a plug cutter to remove the material the screw was still attached to, and remove the cabinet, cut the screw flush tot he stud because even with vice grips, it wasn't going anywhere, ever....
So I could have gone to Home Depot, bought a new cabinet that would actually match these old ones, yes they still make, and sell the same lousy cabinets. But in true Dave's Workshop fashion, I just HAD to fix what I had.... Even if it included having to buy a new tool which, you know breaks my heart... Or not.
So anyway, here's the video on how I fixed it, and how I refinished the cabinets with white chalk paint, going for that rustic look...