Coming back to a long-abandoned project that  I mentioned in an earlier post.  Sanded down a bunch of air bubbles under the partially glassed hull of a Shearwater Sport.  Went to apply epoxy to the sanded spots but got concerned about my approx 5 yr old epoxy.  It's been stored in a central Florida garage all this time, so never frozen, but got pretty hot.

The resin is clear, but the hardener is dark brown.  Mixed up a tablespoonful to brush on the sanded spots, but figured I'd hold off til I checked with the experts.  Does this sound right or do I need new epoxy?  Or at least new hardener?  I left that tablespoonful in the little plastic mixing container, so I'll know tomorrow if it hardens.  But I but don't know if that necessarily means that it's good.

As always, would appreciate any advice.