Painless Harness Hole Cutout??

[muddpile]

I got my painless harness in the mail today, and I was going to cut the hole in the firewall bigger tonight with the supplied template. I taped it to the firewall over the old square hole, and immediately saw a problem. One of the 1/4" holes you have to drill is on that curved/stepped up spot on the firewall, to the left of the original hole. What do most people do, just weld the old hole shut and move the fuse box to the right so it mounts flat, or is there a better solution? Thanks!