My roof has a few rust holes in the top. The edge channels are fine. Should I patch or replace? I have the roof skin. If I replace, Any tips I need? I will cut off the original around the edges leaving a small strip to remove later. Do I need adhesive to put back on or weld? Do I need to brace the car? What do I use to make the little adhesive discs between the layers? Any help would be great! I'll post pictures of my roof currently. Do I need a host for pictures?