This guy (Bishopheals) not only shows an easy way to clean the Poldiac parts, but he also changes out the magnets for a spring, plus adds the bottom button's silver plated flat cap on top. Well worth the watch for these tips!!
http://www.youtube.com/watch?v=OtjidfvaoFU&feature=c4-overview-vl&list=PLD94070498D1970A3
http://www.youtube.com/watch?v=OtjidfvaoFU&feature=c4-overview-vl&list=PLD94070498D1970A3