Are other people having the same issue?
I'd suggest that if it doesn't loosen up, give 'em a call. They're very willing to solve any issues, and if this is an issue with all of the cases, if you make them aware of it, they'll perhaps tweak the design, and send out the redesigned one for free to you.
I know that they've redesigned cases in the past when a legitimate issue has arisen.
Curious if others have the same problem.
Thanks for the feedback!