I bought a Marmot Pennacle sleeping bag off Craig's List, excellent bag, 800 down, sleeps great, only one issue...it's 6 oz heavier than the Marmot web site says it should be...weighs 3lb, 2oz...should weigh 2lb, 12oz. The bag is rated at 15 degrees but I believe it will go far below that. I'm guessing Marmot reduced the fill somewhere back in time to reduce cost and save weight, although the bag looks like new. Anyone have any knowledge of the matter? Thanks a bunch.