It seems to be two steps forward, one step back on #10. No sooner had I fixed the quartering issue that had popped up, than I discovered that the engine truck weight was dragging and catching on guard rails.
After I resolved that, I triumphantly placed the engine on the track. Where it sat. Silently. Just sat, as if it were getting no power whatsoever. Yup, that’s what was happening, all right: the other tender connection had failed in exactly the same way as the first.
Well, fortunately, I knew exactly how to solve that problem, and so, this evening I repeated the procedure that I’d done to the left side on the right. The engine ran back and forth happily after that.
And then it didn’t.
Some days I want to chuck the whole thing in the trash. Not just #10, but the whole hobby, or at least the way I practice it. I have made a lot of choices in this hobby away from the mainstream. 1905, the Canada Atlantic, Proto:87 – any one of these would have been a road less travelled. Combined, there isn’t even a road!
Now, just as with the tender connection, I know that every time I tackle a problem, it will be easier and faster the next time. I am paving my own road as I go. But, I tell you, it is hard going some days.
Pembroke:87 
Keep at it. I could care less about choice of prototype – they’re all completely cookie cutter from where I’m standing – but in certain cases they drive a project in interesting directions. Your project is one of those. I doubt your modelling practice would be as interesting without the technical choices you have made and the effort it has taken to execute them.
Andrew H
Thanks Andrew. I will keep at it, for sure. You too!
An update: it turned out to be easy fix. I simply needed to do a little more crimping on the new connector. Now the engine stomps out of the station with the passenger car without a problem (well, except for dirty track).
I think anywhere folks are exploring less trodden paths in this hobby, you will find they are taking full advantage of the new technologies. I do love the irony of using 21st Century manufacturing to model the 19th Century, though 🙂