Just got a pair of 2014 fuse rs and without boots, it's no problem to unclick the lever in the back to lower the high back. But with boots in, it's almost impossible and it kind of defeats the purpose. Is there a trick to doing it?
What he said. It's a natural (and incorrect) thing to do, setting up Flows so that they feel as tight as traditional bindings. Also people tend to not take enough time to ensure that the front (toe) and back (ankle) half of the I-strap are providing about equal hold. If the toe is too tight you'll be trying to yard the foot in there while the ankle will still be loose. A little investment up front in getting it right pays off huge.