So I purchased an X files pin a few weeks back, and while it did have the updated ROM that lowers the power of the magnet under the playfield ( the one directly in front of the file cabinet), it didn't have the metal plate.

There's damage to the playfield where the magnet wore through, but it looks like it was semi repaired, covered in mylar and the hole was filled. However there is a small divet in the field there.

I was lucky enough to have someone very nice ship me their old metal plate, but it obviously didn't come with the other items in the kit.

What should I use to affix the plate to the field?

I've actually tried to track down an original new cond. plate & kit, but unfortunately I couldn't find one.

As I said, mine was second hand and I don't have an adhesive backing on mine. Maybe I'll try some 3M double sided tape for something...