[Eliot Ness]

 + one on making sure your staples are not too long. I did that once to a little table radio I had spent much time restoring. The staples punched through the front in two places. I was able to refill the holes but felt dumb for not checking the length first.

+2. The same thing happened to me on a wood 38-14 I had carefully refinished.

Yeah, I forgot to mention that I learned the "short staple" rule on a nice little Emerson tombstone many moons ago