Would you like to trade those 650B's for a pair of comparable 650C's?
C's would fit better, but I think I would rather stick with the B's. I do intend on using a different set of B's, so the brake problem will remain.
The rims are new, the hubs are a mixed pair. I bought them off a guy leaving the state (package deal with a bunch of other stuff). If it is the wheels/rims/whatever you want, let me know and we can work something out.