61-78% doesn't make much sense to me. You'd almost have to take the meter out of the jar and drop it in a glass of water and put it back on the jar... I'm running out of help for ya now. I'd say check your meters or put a few in the same jar and see if 1 is screwy. I used cheap moisture meters and usually 2 or 3 out of like every 10 are bad. Also, if the buds are dry on the outside and still moist in the centers the humidity in the jars will rise. My cheap meters can also take an hour or 2 to settle in before looking at