I had the quick release one and lost it too. Just keep a wrench in the Jeep. That's what I do. The other problem with the QR system, is that anyone can take it easily.
Not sure of what area you're in, but you can also go to the Blackfoot truckstop (by Lou's autobody) or the Husky truckstop on barlow tr. and 32nd Ave. (kiddie corner to Shaw Cable in the NE).
Good luck.