way back when I worked in sports n camping store we had visit by rep of one of the big companies..possibly fairydown??? long time ago now...was shown that you can move the down around in sleeping baf baffles by doing a sort of karate chop motion to move n shake it along baffle from top to bottom...the bags had baffles running around bag of course.... might be solution to your woes.more on top in winter for warmth and more under neath in summer so not so warm.
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