Fine fitting the top plates, which consumes a crapload of time to get the open corner welds set just right.
On the plus side, I'm finally getting a feel for welding these original 14ga rails. It's been challenging finding the right setting without bringing up the contaminants on the inside of the rail where there's still some old corrosion and (now) Eastwood primer. I broke the process into two, and have used it successfully several times now.
First pass with .045 wire.
Cover pass with 1/16
More to come. It should only get up to 105 today.
David