I quickly scanned back through the thread and its ancestors but I didn't see this mentioned explicitly anywhere:
I don't think BR is working. At all. It uses CR in place of BR.
The shield boost recipes is where this is most obvious, but I was getting funny results in a few other places (well, BR isn't in many recipes) so I got suspicious.
Could someone else do some independent testing?
Also, I've got those two missing rabbit paw belt recipes (magic and super) in FMR v1.1, which should be up on Nexus tomorrow. Made some other interesting discoveries just tonight so I'm rebuilding the mod from scratch. That's where I came across this funny BR thing.