I recently acquired a Warbonnet Blackbird and soon after a Mount Washington 4 under quilt and a High Sierra Sniveler over quilt.
Last weekend was my first use of them in the wild. Saturday night it dipped to 20 deg's. I was mostly comfortable but I'm not sure I have the under quilt installed correctly. Does any one know of a good video showing where and how to attach a MW4 to a Blackbird? The directions didn't help me much.