Pay attention now troops .....Spotted this just now - handy if you have never done it before :confused1:, are plain scared :fear:, or are just crying like a ickle baby at the thought 
Good stuff
http://pinside.com/pinball/forum/topic/vids-guide-to-rebuilding-pop-bumpers

Good stuff
http://pinside.com/pinball/forum/topic/vids-guide-to-rebuilding-pop-bumpers