Pauly383 had a problem with a Quicklock in his 12 bolt rear. He had to have it replaced I believe. I personally would just pay the little extra money for a Lockright. I have a lockright in the front of my truck (10 bolt front) and it works fine and have never had a problem with it. A few guys I wheel with have had Lockrights also and never had a problem with them.
Harley