Bruce, that is a gorgeous engine, and you did right by it. I can't believe how smooth it runs at low speed!
In a way, you remind me of me. I tend to agonize over the amount of play in crank bearings, rod bearings, valve linkage... and a part of me is always scolding, "Let it go, it runs fine...", and usually I listen.
A good example is the Carette engine on my bench now. I've already decided to make a new crankshaft and install bushings, but I keep thinking I might as well go ahead and make some sleeves for the loose connecting rod and valve linkage. Then I think, why? It won't make that much difference, and it's not like it's going to be run very much -- at least not like when it was new. It will spend most of its time on the shelf. And so the conflict rages on...
Paula