OK, thanks fellas, I'll put the nail back in. Didn't realise they used nails back in the day at the factory.
By the way, mine also has a couple of nails behind the upper right 3 bank drop target, under the plastic, anyone else have those? I removed them, but you can see the holes below:
![](http://i1128.photobucket.com/albums/m483/antswanmail/DSCN4620%202.jpg)