The thread was here...
http://www.pinballinfo.com/community/threads/sticky-balls.31965/
Glad to see it revived, nothing like comedy ball placement..
View attachment 44543
Maybe you suffer from.....Had this interesting ball jam yesterday on acdc. I believe if this had happened on some older machines both pops would have locked on. Had to nudge hard enough to tilt to free them. Actually the pop bumpers look like they are pulled down in the photo.
View attachment 60645
Ben Stillers in There's Something About Mary