Well, if I do need to return them, Richard, there's a branch of the chain I bought them from about fifteen minutes by foot away! Hopefully I won't have to, cause I know for a fact they don't stock the things.
I'm getting some good drum recording using them as overheads. I didn't like them too well on acoustic guitar because of the noise factor. But, that doesn't apply as much with drum overheads. They will reproduce a source very exactly. The source needs to be LOUD. You will find them useful if you use them right.