I know this post is rather old, but I went looking for a solution to the same problem. I bought a cheap Turkey Fryer, and use it for that as well as brewing. It worked pretty well for a coupleasant times, but lately it has been not working well. I have to admit I have not treated it too well. Several boil-overs and being left outside for a couple years, and not working well. Tried adjusting the air valve, and flames actually shot out of the air valve. Quickly shut off propane. Figured this is a signthat the path is restricted. I couldn't get it cleaned with an air hose or a pipe cleaner, so I took the burner apart and used a wire brush to clean the spiral burner element and the gas-air mixing chamber and put it back toget her. It worked perfectly immediately after lighting it. Very simple construction, so as long as the bolts aren't too corroded, it should be an easy thing to try. Good luck!