My Rules:
- #1 I use New Old Stock as much as possible (NOS); Reproduction as second choice (no matter what, repros almost always have slight errors, be it in color, details or texture of the material).
- Original controls, in correct colors (though ironically, I often use new buttons)
- Trackballs I rebuild with new rollers and bearings, and new ball
- Replace anything too worn. Minty looking control panels are most important to me.
- Repaint anything that is rusting, flaking, bubbling, using same color and texture of paint.
- If original wiring and circuit boards are there, keep them. I never bother re-wiring. If it works, don't fix it.
- In Atari cabs: Replace big blue, recap AR-II
- Clean all connectors and edge connector traces
- Side art: Touch up nicks and blemishes. I don't think I'll ever bother re-painting with stencils. If a cabinet has bad stenciled side-art, I'd rather find another better cab, and do a parts transplant, than re-paint. If it's a cabinet with original stickers in bad shape, I re-sticker.
That's pretty much it. I try to make it look as new as possible, using original parts if possible, and then I draw the line at re-painting stenciled side-art, or redoing woodgrain, if what's there is good enough and not too damaged.