I got the other Jackmandu that I ordered off the Exchange. It has the angled edges, too, although not as bad as the one I got straight from SRKW. So it appears to be something specific to the Jackmandu run, and not that uncommon. I don't think I'll bother contacting them. Just gonna use it. The more I mess with it, use it a little, etc., the less it bothers me. It's not right, but it is OK, I think. Still interested to hear how your situation works out, though, scdub.