While the citric acid does it's job on some rust for the addition B pillars, thought I would address the bottom door gap. I could only get 2mm and needed 3mm! So I cut off 2mm so I could then leave 1mm of weld plus penetration after smoothing it.
Welded up and now have the right door gap. Funny thing is that it now matches the door on the other side which was factory folded slightly different.
The part of the door I am using to extend the door has some rust issues!
Outer skin looked alright but the backside showed heavy pitting, so folded up a new piece to replace it.
So the whole bottom was cut off to replace it.
Hadn't used the tig all year so had to get my hand back into it. Can see it pulled up on the weld line more than normal as went too slow with not enough amps.
Fortunately this end of the door is pretty flat so clamped it to the table to stretch the weld out flat. Bit tricky under the lip so just slid my hammer along while hitting it with the mallet.
Nice and flat now without any distortion left.
Cleaned up ready for the next stage.
Folded up a new piece for the replacement frame. Made from a single piece but welded where the end folds came together.