rather a slow[1] and noisy run back from solihull, but it got here.
some attention to doors makes 'em shut better, although it could use some more convincing seals, and reducing the valve clearances from "big enough to drive a bus through" to the requires 10 thou has quietened the engine a bit.
I found a couple of newish seats in the shed, so now the seats are decent too.
I'll check the timing in a bit.
[1] it'll trundle happily enough at 50 and would probably go faster.