That's a generous offer...greatly appreciated. Not equipped to post pictures; can't return it...it was a gift; I don't have the packaging, address, etc.
To look at it, you would think that glue had leaked out and collected on the top edge of the slate, but that's not the case. I think it's simply slate fracture from cutting. Whatever, I will work it up...and ultimately find a striker or three with which I can play a seductive tune. The real test will come in the spring.
Thanks,
L-Wes