Picked up a Jokerz a couple of months ago. Had some work to do on it. The owner didn’t know the backglass could come off and when I asked her if she changed her batteries, she said it doesn’t run on batteries - it plugs into the wall……… anyway, the very corroded batteries came off and I’ve been working on it for a few weeks. Just changed out the upper playfield. I didn’t realize the switches were all rivets - so that was a fun surprise. I ended up using M2 screws to replace as I was sure as soon as I riveted the switches back in, they would fail. Pretty happy with the swap. Great prices at pinball inc.

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Pinball inc has them

I used tiny little screws and bolts instead of rivets — it fit perfectly. I think they were M4