I do not have that background and hope I don't need it when I get to my windshield. I hope you'll keep us posted on choices and progress. I hate to say it but you may be a worst case scenario on windshield repair, costs and methods.Has anyone been down the road of cutting out rusted metal and welding in new clean metal in areas around the windshield frame? I have a ballpark estimate from a shop that will do this for me but I have no idea if the price is in line or not.