I picked up my new Sunseeker in June 2013 and had to replace my regulator 3 months later. I noticed the level going down weekly without any usage. I mentioned it to the owner of the propane filling station I go to, he pulled out his propane leak detector and handed it to me and told me to go check all lines and joints. Sure enough, it detected a leak on the regulator, and not at its joints, it was leaking at the crimps. No choice but to replace. I purchased this:
Amazon.com: Camco 59323 Horizontal Two Stage Propane Regulator: Automotive
works great, and while I had it apart, I also installed this to hook up to my Weber Q120 so that I don't have to carry any more of the small green propane tanks:
Amazon.com: Camco 59103 Propane Brass Tee with 3 Ports and 12' Hose: Automotive
No more leaks, and easy grill hookup!