I was searching through the thread archives and I came across a link to a forum where some guy had modified his Squier 5-string pickups with washers. Apparently he used the washers as poles and got some really good results since Squiers(5 strings) use four string pickups. He also stated that modification was "invisible". What I don't understand is: how is that possible if the pickups are completely sealed? I am interested in doing this to my own bass, but I can't figure out where he put those washers.