Its like anything with this hobby, you gotta watch em.
I open my cure jars every day or two, check the buds for moisture, if they moisten up after a few days in the jar then take them out for 12 hours or so and put them back in the jar.
Its rather easy to know, I just compare them to how your bag from the dope man feels, if they are wetter and spongier than the dope mans, then you are too wet, dry them out more, if they are too dry and crumble, then you need to wet them up, a humidity pad (like for cigars) for a few hours in the jar helps moisten dry buds. But dont re-moisten till you are getting close to the end of your cure, you will find buds are dry on the outside but still moist in the middle till a couple weeks into curing. Bust one up and you'll see what I mean.
Good luck.
TKG