This may be an odd question: When sighting down the length of a tailpiece from the top near the fret, should the thickness of the material ABOVE the fret be of a consistent thickness? If it's not, does it matter? I just got a new tailpiece and one side is a little thicker, and the fret is a little taller on the thinner side (I suppose to compensate). I've not been presented with this thickness descrepancy before, so I thought I'd ask. If it is a big deal, I'll return the product. Thanks.