Got back out in the garage today and made another pass at filling those drilled out spot welds. I changed my "technique" for this attempt. Instead of putting the welding gun straight at the spot that I wanted to weld, I held the gun at an angle, so that I could see the wire. I think that this helped me be more accurate, but not spot on accurate. Oh well, maybe by the time that I'm done, I'll be spot on accurate. Anyway, I did make progress in filling in the holes. However, there are still small low areas. I really don't think that they are completely devoid of welds in those low spots. Rather, I think that the surrounding areas are just higher. In no way do I think that the low spots are affecting the structural integrity of the joint. That structural integrity is achieved around the perimeter of the spot weld drill hole. Those areas are welded correctly. Bottomline: the old saying "better is the enemy of good enough" came into play. So I got them as flat as I could, hit them with a self etching primer since the entire area was down to bare metal and added a top coat of flat black. The primer and paint are just to prevent corrosion. Once the entire floor is done, I'll circle back and paint the entire floor, even though it will be covered with a sound deadener and mat. I'm not worried about how the low spots look, as they will be covered by the windlace and retainer. So no one except for me (and you the reader) will know. The area to the rear of the rocker panel remains as documented in the pics. I had a very difficult time with that area. Not sure what was different, maybe some rust on the the original floor or the original metal was thinner? I'll look at it again when I get to the lock pillar bottom. Pics attached. As always, comments and suggestions are welcome.