I hardly ever interact with PW Lionel (or other) equipment, but it seems like I glued something back together - and old banged-up PW shell or something that I was using in a low-end project - using Testors plastic cement. Just your standard, styrene-and-styrene-like plastic glue (actually a solvent, which is why it works so well). If PW plastic is related to styrene, this is your stuff. But, my memory is not clear on the repair.
"Restorers" may want to go another way.
