I haven't noticed any sound from it but by the time I get it off I'm usually cursing it out loud lol. I'll have to check the vent tube that's a good idea!
Or do a search, many have just taken a file to the straight just below the threads and filed the OD down just a tad. That straight non threaded area will bind up in the tank. Doesnt take much, just a few swipes with the file. Had mine replaced under warrenty. A couple months later did it again. Filed it and never had any more troubles.