Is there any one particular thing that can turn a work of art into a rotten egg?  Do you look at the rear of a bass, shiver in anticipation, only to gag and stagger from the room the moment you see the headstock decal? Or scratchplate colour or shape? Or lack of a scratchplate altogether?  Is a hideous headstock, a brass nut, gold nob or a side mounted jack socket enough to have you turn on your heel and leave? Do you wonder if you've chosen the wrong instrument when someone puts