Quoted from Mando:Do you have to be extremely cautious when lifing the playfield?
Here are pics of the ones Joey (PDI) sells which come from Germany showing how easy it is to install them.
http://www.pinball-dreams.com/index.php?article_id=12&clang=1
And the felt can be purchased from these guys- scroll 1/2 way down the page to see it.