Hello. I am trying out a 2007 German made Club 500/2 bass and lowering the action works to the point where the E string hits the pickup magnet when fretting on high frets (above 16th or so). I tried to loosen the pickup by turning the side screws but apparently there is no play - the little screws seem to be threaded into the chrome housing. Is this the lowest I can go? Is there a way to lower the front pickup?