I just saw on the for sale forum a Lionel up auxiliary water tender where the entire body is warped, I was suprised. Wonder if this thread might be a running list of modern items that have had known issues with zinc rot.
I am aware of:
-JLC GG1 side frames
-MTH BNSF coal porter trucks from the late 90’s
-weaver troop sleepers floors
-Lionel sf scout heavy weight passenger trucks
-MTH amfleet Amtrak premier trucks from the late 90’s