HP67 Keyboard Internal Cracks x 4

[jftman]

My sense says fiberglass as used in body work and some epoxy on the edges?
It is interesting to fathom a way to close the crack because they are very straight too.
The affected keys work but are spongy.
These pins just got spread about, no sign of being put in place.
To bad not one of them was stuck in place, even if soldered and came loose.
They prolly were laying in the bottom or top, willy nilly.