That wasn't the problem on mine. On mine it was the tab being bent in too far making contact with the mount (if that makes sense) on a backfield GI or two. I will definitely check on this tomorrow!
In other news, my friend and I just spent the last 10 hours doing a "quickie" shop job on WH2O. You can see some pics at this link:
https://picasaweb.google.com/judremy/Pinball#
My wife repainted Bigfoot too and he looks great. Please let me know what you think!