I have a 65 chevy c10. I am in the process of repainting it inside and out. THe previous owner was working on the door panel on the passengers side and drilled all the screws holding the door panel on. The only thing I could do was finish the drilling until I could remove the door panel. Then I had to knock out the square nut that was in the door because the screws was in them and I could not remove them. How can I replace the nuts. I tried to weld in some new one but that did not work I was getting weld splater all over the inside of the door where I am doing body work. Do they make a replacement nut for the door panel?