Quoted from Dirk:
I had the same however nobody had a scan i put a cliffy magnet ring over it. That covered it up 90%
I highly recommend the cliffy kits, they really save your playfield. Here's a link: http://www.passionforpinball.com/Spiderman.htm
Also ask Cliff to add the magnet ring for the Spiderman as it will more then likely resolve the cosmetic problem. Here's what they look like: http://www.passionforpinball.com/Metallica/Met-install-071.jpg
Hope that helps!