Need 58 Door Bottom Replacement Tips

[dyno]

I've almost replaced all the lower cab sheet metal and saved the worst for last...door bottoms. Not fun. I've got the bottom sectioned out of one door and painstakingly trimmed the inner and outer patch panels to fit, retaining the curve of the door with a template.

Quick questions before I weld it up.

1. Would you weld the inner panel in first or do the inner and outer at the same time? (as an assembled unit)

2. The panels did not have weep slots formed in them. What's the best way to do them?

3. What are you using to replace the foam strip that runs between the outer skin and horizontal brace?

4. Before I weld up the bottom, I'm going to treat the surface rust inside the doors, prime and then shoot them with undercoating. What about sealing that vulnerable inside bottom seam? I guess the only way to do that would be to assemble the inner and outer panels and run a bead of seam sealer in there before I weld it onto the door as a unit.

Thanks.