body shell yellowing?

[Finnsllc]

Hey everyone. I luckily stumbled upon a KEEN HAWK body on the bay as i wanted one for an accidental bay auction win for a second DF03. I missed the boat on the KEEN HAWK and have liked the shell style but never grabbed one. As a result of unexpectedly having another DF03 I went looking for a KH body. Found one and it was painted but not in box art. As it was the only one avail, i purchased it as soon as i saw it. It arrived today and i quickly started removing the paint. As the paint was coming off I noticed a yellowish hue through the lexan. The paint is coming off perfectly but the shell is stained if you will. 

I was wondering if anybody has experienced this or better yet has a thought on cleaning this yellow off. 

Additionally. There are areas where the yellowing is not present. A couple of areas have small rectangular clear areas as if at one time there was a sticker there. another area is not a shape but an area that is far more clear.   

Thanks  

[wtcc5]

If the plastic was exposed to sunlight over a long time (months or years) this just happens. As far as I know, there is nothing you can do to restore it, as it yellowed through and through.

If the body is uncleaned from the outside, it could be, that the previous owner was a strong smoker and a layer of nicotine is on the surface (like in my case with the BMW M3 DTM). Then you can wash it of. In my case the stickers stayed yellow, so it must have seen sun, too.

[87lc2]

I had luck with bringing the color back on a white original Grasshopper shell a few years back.  I wet sanded with 1000/2000, then compounded & polished the plastic with Meguiars 105/205 and it looked like new.  Even better than paint, nice and glossy white plastic.  Just need to remove the top surface  and it will come back like new, hardest part is polishing out the sanding marks.  You can also try to compound/polish first.  If that works then no need to sand and the job is much easier. 

[Finnsllc]

@wtcc5 i  am going to try to 'clean" it. I was planning to paint it box art but if i cant get the yellow cleaned up im going to have to figure out a color that wont be obviously affected by the yellowing. Im not sure if silver will work. 

[Finnsllc]

@87lc2 interesting idea using a compound. i will try that as well.

[alvinlwh]

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[Finnsllc]

Well, 99 percent of the shell is striped off.  Yup  its quite yellowed. As i was removing the paint i did realize that the shell is also quite brittle. I only paid a total of 20 USD including shipping. So I cant be to worried about it.