For completeness sake and to make operation easier, I tigged a fitting on. And that was enough to allow me to stamp, stamp, stamp all the way along the strip. Once you have a ding in it, it sort of self aligns. Bent to match. Tiggedy tig. Dressed up the inside but didn't bother too much on the outside, then primered. Might just be dry enough for me to fit this evening in case the rains come. Once the tank is in place, it becomes a van again and I may need to move it to do the other side anyway. S.