Made some progress on Dev's frame today. Brazed in the 710 mm seat tube and the front derailer braze-on. It's stainless, so it will polish up nicely. I positioned it about 3 mm from the bottom of the slot, so Dev can run a larger chain ring in the future should he desire.
And....the front triangle is very close to being braze ready. Some minor adjustments on the miters and shape the apron on the seat tube lug and it's ready to go. It should happen this Thursday.