What is the humidity outside during the day where the leaves are curing? Can you check it several times a day? You may have to move them inside once the humidity climbs at mid day until the humidity comes back down again. My humidity swings up and down and I have to chase the humidity or cover with clear plastic to hold in moisture. You may have to open and close garage door to allow night time humidity inside then close door during day to keep that humidity trapped inside.
edit: you need to fix it now rather than later. I haven't had any luck fixing leaves that dried green.
So I won’t be able to fix it up in the kiln?
I have pulled the dehumidifier down to the garage to keep things at 75% during the evening as it cools. High 60’s to low 70’s during the day with a fan going (sometimes) if there is no breeze as sometimes there is no air moving.
I should get one of those govee things to measure temp and humidity accurately.
Only hang the leaves out during the day then bring them back inside in the evening.
Maybe I should just let them mature even more on the plant so that not long is needed to go yellow once removed from plant??
The irony, I’m worrying about mould on some leaves and others are flash dying green.