I welded in the rocker and ground the weld smooth. I was able to salvage the outside edge, which is visible below the door.
I aligned the step plate and clamped it down, then welded it in place.
The cab support was toast, so I made a new one.
I cut a piece of 18 gauge for the floor, added a few bends, and started tacking it in. I'm going to make a separate piece for the center section, I just couldn't get to it tonight.
I have been working much faster than usual on this project, since I'm much more concerned with getting it finished than I am with the quality. I usually wait a little longer between welds... but tonight I exceeded the duty cycle of my welder. I managed to melt two .023" tips, they got really hot and started to sag. And that grinder wheel started out as 4-1/2" diameter, now it's about 1-1/4"!