We had the same "shelf life" problem when DuPont IMRON first hit the market almost 50 years ago. One of my friends left a little paint in an almost new DeVilbiss spray gun overnight, only to find it cured into a solid mass the next morning. Ruined the gun! He learned the hard way to clean up his equipment a shade faster than instantly when using catalyzed paint products!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!