Since I saw the restoring chrome thread, i figure it couldnt' hurt to ask. How do you restore yellowed plastic? I have a Fort Max and it's a dull yellowish color. I was planning to look for a nice clean fort max body but if I can avoid spending the $100+ I'd be a happy camper. Sorry if this topic was discussed b4, i couldn't find any threads on this topic.
It's been discussed a lot, but nobody has a solid answer, other than: 1. Try toothpaste? I doubt this works. 2. A light sanding, won't know until you try.. 3. Repainting. I'd try the sanding bit. It all depends on how deep the yellowing is. It's possible that it's all the way through, so repainting may be your only option.
If you do sand it........... Take it slowly. Afterwards you'll need some very fine grit sandpaper to smooth it, we're talking like 2000 grit or so. The type of stuff that they use to sand aircraft windows.
Something I use on gundam models and such is an emery board kit, the same ones women use on their nails. Get one with several boards (a rough one, a cleaning one, and a polishing one). Use the roughest first, and move down the line to the polisher. The polishing one is almost like rubber, and it really makes the plastic shiny, smooth, and clean. It's amazing how well it actually works.
Ouch, I'd rather not remove plastic at all. If I were to try anything, I'd go the painting method, myself.