final pix of subframe connectors

I really appreciate the detail and explaining what you did with the barking brake. I have mine out right now, so doing the mod you did will be easy.
Rotoy files get crazy when they grab, just like any burr tool in a hole.
Is that a HF cleco gun? I looked at them, but I wasn't sure how well they worked.
Is that the weld through galvanized spray primer where you butted up to the cross member? I have a can that I haven't tried. How well does it work?