In the middle of working on a Bally Evel Knievel (my first restoration ... hooray).
The backbox has these sheets of foil under the PCB's, that I figure are some sort of 70's EMC-screening.
Is there anything against replacing these foils with just one metal sheet in the back like in the WPC-machines ?

Thx for the feedback. I'm not going purist on this restore, so out with the foil and in with the sheet-metal.
BTW: Real nice looking backbox there. I can just hope to achieve the same level.

I remember that he was looking to make these stencils, but stil needed decent scans at that time. These stencils are not yet on his website, so I figured these are still a work in progress.

If needed, I can have access to a scanner. I just need to talk to a friend, offer him some fancy Gin 'n' Tonic's, and scoop the scanner from his desk. He doesn't use it that much, so he won't miss it for a week. The worst part is getting that old HP-beast working under Win 10.