I wish I could report progress, but none has been made. The new welder isn't here yet, and I've been out of commission for the last few days anyway. My right shoulder's been acting up and it's directly related using it so much in the bike build. I injured it when I was a kid and it hasn't been the same, and in fact it's the very reason I switched to recumbent bikes. I've been resting it the last few days and only yesterday did it feel the least bit better. It needs more rest, and I've got a busy week lined up anyhow.
Of course I'm still building it in my mind. One thought that came to mind was that in an effort to keep the CG low, I could lower the cranks below the main frame boom, rather than raise the seat so much higher. I'm trying to decide how to go about that while keeping cranks adjustable.
The other thing that I realized is that the rear wheels have different hub widths, and so this means that the center of the frame and the center of the wheels will be slightly offset to the right! Definitely an unintended consequence of my design. As I go through this, I'm seeing more and more that the Lode Runner design is superior- but I didn't know this until I got this far already, and there's no stopping now