I bought a Hammock Gear Burrow 20 down quilt about two years ago, and it had been losing down for a little while. I finally found the culprit—a well-hidden tear around one of the footbox snaps. I emailed them about repairing it, and they said that this was a problem with their old quilts and they have a new design that reinforces the fabric around the snaps. I sent it in, and not only did they repair the tear and they add reinforcement to all of the snaps, they stuffed it with extra down to bring it back up to its original level. All for free!
Reputation is everything in this business, so I just wanted to give Adam and his crew a shout-out.