The tray under the seat needs attention. Battery out-gassing and fluid takes it's toll on the aluminum panels. POR15 paint is coming to the rescue.
Here are the tray before shots:
After about 20 minutes with the air sanders including a die grinder with roloc discs and a DA sander with 120 grit, then coating:
There isn't much I could do about the pitting. I wouldn't want to use filler since it is much softer than the metal and the coating doesn't bond that well to it. I'll be finishing the tray today and continuing on with the body panels. I hope to have the body done in two weeks.