I don't use Gorilla Glue often, so I don't get the large bottles. I don't get the large bottles because is gels or hardens or begins to cure in the bottle.

I don't know much about the drying process of Gorilla Glue. But if it is curing in the same respect as varnish cures, would it be useful to squirt some bloxygen into the half empty bottle before capping it?