He would need source material, unless he's done one already (though wouldn't he list it on his site if he did?) Also for mirroring, why can't he just leave those areas clear then spray it? It's not quite as good as true mirroring, but it's better than grey
http://www.krylon.com/products/looking-glass-mirror-like-paint

just joined the club yesterday, drove 340 miles round trip. Found it on ebay, really good shape. It's been shopped, LED'd, mylar removed without any paint removal. This is one of the few titles I remember playing in the arcade when it's new, every example I've played has been beaten to death and really skewed my memory of what it was like to play. This clean version has taken me right back to 1990.

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I don't think so.. Mine has a very small smudge. It wouldn't be very hard to copy this simple art and make a quick label that goes over this. Better yet, make a simple stencil so you can spray over the whole section directly on the playfield.

I'd say somewhere between $2200-$2600

If the pot is going bad, sometimes you'll hit areas where it's on the verge of not working. My crappy computer speakers do the same thing, and I have to either go up or down to get it to work. variable resistors suck.

https://www.titanpinball.com/kits/index.php/browse/bygame/691

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They got a lot of flack for the space shuttle backglass being darker, and then the sling plastics were a different blue. Don't know if they ever took any back.

Plenty of pinsiders in the chicago area that own this game if you need to look at a physical machine that photos can't help.