This may be a tough one as the ones I have seen do not fit directly over the Weaver heralds. In fact, I corrected the beavers on two of mine as Weaver made them all gold. It actually took 2 beaver decals plus some custom mixed paint just to correct each beaver and that doesn't include anything for the rest of the herald.
I'm out of town for a week, but when I return I can look at what I have as I believe I picked up some CP decals from another supplier. Can you post a photo of the part you are missing?
Nick