What's the deal with the frets on the S.U.B. models? I've examined 4 or 5 here in Fresno and every one seems to have these deep cuts that extend way below the frets. There is a little pocket or gap that you can both see and feel. Do they all look like this? Looks a little sloppy if you ask me. Wouldn't dust and sweat and crud gather in these gaps? The frets on the Stingrays and Sterlings look so clean in comparison. I guess that's why they cost more.