The landing leg shrouds are, for the most part, gone. There's one that seems intact-ish (maybe missing parts), and another that is just a fragment. The cracked one gave glues to its origin - heat formed acrylic. I found no evidence of styrene being used on this model. My past experience with vacformed styrene is that the thinner you make it (stretch it), the more fragile it gets over time. The elastomers that make the material bend change with heat, it gets more brittle and 40 years later, it flakes off. Also, gluing down vacformed styrene may lead to crazing in the paint and warpage as the shrink rates for the various materials is different (especially under hot lights). I think because this thing was made to be bullet proof and not on the cheap, it has survived as well as it has.
Gene
Gene