Thank you kindly, gentlemen. That is what I thought...lay in a stash of various width spacers and make it work.

southpaw, thanks especially for the 122.5 with 2mm spacer suggestion (and nice Voyageur, btw). That is very helpful as a start. I'll slap the old BB/drive side triple back in there and take a few measurements just for my own education. I really appreciate the honest advice, and I hope it will be an improvement when I'm all done. Thanks again.