Several of the old FNS casting I have (puke green) that I have sanded (per his instructions) like his flat cars all stank (yes, a strong, pungent, sickly-sweet odor like naphthalene and 1,4-dichlorobenzene found in moth balls), but it is less noticeable now that they have been painted. Still, the shrinkage would be more of a concern, but I've not seen (or noticed) such yet.
Otherwise, bit fan of Dick's work.
-Jake