So you don't even try to talk to them about it, slam the product across the forum, and don't even think about the fact that they have a great reputation among cottage industries in general... Sorry, dude, but if I were making a product and selling it, I'd want to know. If the quilt doesn't have adequate down, that's easy to fix.
Yours is the only complaint I have ever read about those quilts - and I read a lot of reviews and ask a lot of questions before I spend that much money on a piece of gear. You're basing your opinion of ALL JRB quilts everywhere on a single item and not bothering to talk to the Jacks about it - nice generalization and great way to handle things... not.
Sure, I'd have a Nunatuk in a heartbeat - but I would still be using the JRBs, and I look forward to decades of good service from them.
ETA: The Jacks have a guarantee. You might read it.
Selling a defective quilt to another backpacker - and that sounds like what you're describing here, a defective quilt - is probably not going to help you, the backpacker or the Jacks. And I think they would honestly want to help you with the problem.