i think i know what you mean about that kushy feeling that the one buds give i havnt finished a grow yet about 2 month out from harvest but of the bags iv baught it seems that the fresh (as in just takin out of the curing jar are more fluffy from the moister and air that is in it still as time gose on say a month or two sitting in a bag or even an air tite jar but with fewer buds the moister is lost also losing air at the same time is the same thing if your drying a rose mid dry theres still moisture and it probebly would be very airy but as the drying prosses continues the buds get crispier and crisper to the point that you dont even have to buy a grinder (cha ching) buy more bud =)
correct me if im wrong i know this might not make since but just smoked a fatty and im answering to the best of my abillities i can

so yes i would think that you might be over drying the buds well not so much over drying more or less drying past your taste others may like super dry