Removed the tron disc motor assembly today, peeled off the black rubber, cleaned all the adhesive from the plastic then reassembled with the clear disc available from pinballcenter.eu.

I think it looks fine, discs are slightly taller than the plastic not flush, but didn't notice if the stock ones were flush either.

My disc wasn't perfectly cut out but pretty much close and a tight fit.

Hopefully this fixes any black rubber splatter on the playfield issues.

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Ok I played a few games and it whips good , maybe even a little more? The rubber feels more grippy than stock, not a bad thing.

The best part is my red LEDs shine right through it so looks pretty sweet lit up. Pic might not so justice.

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You can just order from them it wasn't that expensive from what I remember. Been playing some more and I really like it, the disc glows pretty good with the lights.

Don't worry about that hard thin layer if residue, won't affect installation , the black stuff you do want to remove as much as possible though. The clear rubber isn't completely clear, semi opaque, so you will never see or notice the old glue. Just stick right in top of it.

Ya I tried that and the recognizer screws were way to short to go through both plastics, did you go buy longer screw or something? Trying to find the right ones, so I left it off. Also there wasn't enough thread left in the back for the back four nuts to go on either with both plastic and protector to go together weird.

I have the cointaker 555 super reds for mine

It's self adhesive