I will be starting a Xenon restoration real soon too. I spent three solid days sorting out issues with it and its finally all working. I am going to lightly mod it, including all LED (already done) and some other custom light mods.
Im luck that my cabinet is nearly perfect so I am going to leave it as is. The only real work on this one will be the playfield....this one is thrashed. I picked up a spare blank playfield on ebay that I will be installing all new inserts, an overlay and clear coat. After that I plan on practicing touch up with an air brush on the original and see if I can bring it back to life.
I only have one question. How can you not LED that back box? This machine looks simply amazing with led. Good luck with the restore!

I thought the same thing. I tried white led, looked ok. Switched to blue, looks and works great.

PM sent.

They put the metal on the bottom side because people figured out you could kick that masonite board and the whole coin box would fall through.
Should be easy enough to fabricate a new one from sheet metal.

Sand it, mask it off and paint it. It does not look to be in too bad of shape. That rust you see if from acid from hands reaching and feeling for the switch. A little ospho should take that surface rust right off. Never heard of ospho? Great stuff, check it out .
http://www.ospho.com/

I used blue comet LED on the infinity lights, they look great. Im using the xpin adapter to eliminate flickering on the playfield lamps.
http://xpinpinball.com/shop/product/xp-blyff
Such a great game, glad to see these are getting restored. I have a new playfield coming for mine.