How the strings line up down the neck. Is the B or E or G sting too close to the edge. Also, check the neck pocket. While a little gap is OK, should be no more that the thickness of a sheet of paper. While holding the top horn, give the neck a pull side to side. If it moves make sure the bolts are tight. If they are, pass on it. EBMM has the best QC in the business, so it is hard to find a bad one. I've never seen one. On my recent shopping trip when I purchased my Sterling, all I played had excellent fit and finish.