Fired up things again to see how they trended - and set things up for the full 8 digits. However, I had an unwelcome sight a few minutes in.
The display sat showing 1.3 - that's all - and the Gate LED was dark, but at least he decimal point was in the right place. Ran through a few things, but nothing doing. Walked away, muttering.
Ignored it for an hour then happened by and noticed it was now working as I expected. About 10 hours in, it happened again for about half an hour - and then it was good again. I also saw this once before, but it seemed to "go away". Silly me.
OK, we have an intermittent ... hopefully resolved with a bit of card replugging and switch cleaning - but not tonight.
After several hours warming up, this is what I saw:
Occasionally, the last digit was a 2 .... and just as occasionally, it was a 0. Aside from that little hiccup I mentioned, not looking too bad.