After looking at the pics I posted and reading advice from y'all, I decided to retiller the bottom limb just a tad. I got it bending a little nicer, and I think I'm done this time. (At least for the moment.) It still has decent draw weight (around 53# at 26"), so I'm happy. It's got around 1 1/2" of set, which I can live with. I didn't want to tempt the ERC gods by doing any heat treatment or bending.
Saw Filer - my experience with ERC jives with what I've read. Namely, that sapwood is better in tension, but takes more set. And the heartwood is good in compression, but brittle.
Here are a couple of new tiller pics:
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