Meanwhile, I patched the set up enough to try a full power up. Relay is still bypassed and power resistor just tacked in place.
Need to dig up a new eye tube too.
Also, discovered the flyback is a replacement and not secured very well.
Replaced HV cable with more convention HV cup and rigged up a 5AXP4.
After a few pops and cracks that made me jump, we have a raster!
A lot of control fiddling later, we have an image. Tuner seems to be off by a couple channels.
I'm both surprised and relieved this set actually produces an image after all it's been through.
Some tube swapping and more control twiddling and we have a decent image.
Mind you I have no shields installed and am feeding a signal in with alligator clips.