I'll order a few hydrometers pronto. But the bud I opened is basically dry inside. I think I probably dried it too fast. But I am not disappointed. The next round will be done more precise than these and I'll trim them better too etc. So I can't imagine how amazing those buds are going to be, if these are already very decent.Can't speak to the itch but I can tell you that you should get meters to fit in your jars. I have 5. You don't know the humidity of your buds without them. All you can do is hope that packet works fast enough.
Buds are a lot wetter in the inside that the crispy outside you can feel. It's hard for me to offer advice on drying and curing without accurate info.