Knifeleather, it really depends on how well the groove was cut. The fullers (and the rest of the machining) on my first tglb are gorgeous. This one's a bit rougher, but its a good kind of rough. Character, I'd say. Might be about time to change the burrs in the ol' cnc machine. I had another one that I bought and immediately sold back to a buddy that had a second groove in the bottom of the fuller. Like the cut was made in two steps and one was too deep.