I have a 2013 NS X-175B. I had a buzz with certain notes I couldn't find and get rid of and think I have finally traced it to the neck pickup. I took the cover off and the pickup base is securely mounted with the four screws. But the black winding part can float up and down the poles. I am tempted to put something like foam on the winding part so when I put the cover back on it will compress and hold it down so it won't rattle or buzz. Does that make any sense? I am new to these Franz P-90s so I am not sure how they are supposed to be. Thanks