The stability proposals are working to improve the pegging to $1. A step in the right direction but perhaps not quite sufficient yet.

However, on the matter of interest I don't think it makes much difference to any peg weakness. If HBD is trading at $1.50 (or $10), someone buying isn't buying for the 3% interest (that's 3 cents in a year!). It's really only when it is at or very close to $1 that 3% is a significant incentive.