I'm starting back on my buddies 67 21window VW Bus and I blasted his little panel in the back and there are some small pin holes in it. I can not access the holes from the back unless I cut out a section of metal behind it and weld it back, so I was thinking of drilling the holes out and trying to weld them up with maybe more solid metal? The other option is to allmetal it, but I don't like that option really. I have yet to talk with him about it, just looking for options before I speak with him. I also understand that the metal will be weak in the whole area if there are already pin holes showing through.