It seems
strange for the drive to look so otherwise perfect and
these items to be mush. Any thoughts?
Storage conditions, especially atmospheric ozone. I spent 6 years
living in LA, and the lifetime of my natural-rubber bike tires there
was measured in months. Foam would either dry up and turn brittle
or go the other way and turn gooey, typically within a couple of
years of manufacture.
Obviously temperature and exposure to UV light/direct sunlight are
factors too.
Well, heat I'd buy, but other areas of the drive would have shown
the effects of sun, and the hub is inside, away from light.
I was wondering what storing the unit in the presence of unsealed
containers of petrochemicals might do... or even worse, whatever
a medical school (formaldehyde?) might have in storage...
-dq