I've seen the ovules in my buds when I had herms and was checking to see if got pollinated. I think it's your dry ferts, too much N. I've never had it happen myself but I've heard of people buds crackling and tasting off because of too much ferts, and thought I remembered it being N. Your suppose to be tapering nitrogen way down during flower and you can't do that because of your dry fertilizer. Also yes dry your buds better, ever thrown green wood or leaves on a fire all.kimda of crackling from the water inside.