It's the heat and humidity that's causing it to harden. Ah, do you fly so poorly you need to keep CA in your flight box?

Accelerator is good. Use it sparingly. One light squirt should harden the glue quickly. Let the CA soak in a little, then hit it with the accelerator. I usually don't use accelerator on thin CA, only on thick.

Flyinrog has a good idea.

I store unused, unopened bottles of CA in the fridge.

Dr.1