I just learned that Jetboil announced a recall of any of their stoves (both PCS and GCS models) that have a certain type of valve they call the “B Style Valve.” This valve is rectangular and unstamped (see photo). According to the announcement:
We have determined independently to undertake this process after receiving reports and returned [...]

Just got wind of this recall, thanks to a Twitter tweep from @treklightgear: Clif Bar is recalling 14 U.S and 4 Canadian products including CLIF Bar, CLIF Builder’s, CLIF MOJO, CLIF Kid Organic ZBaR and LUNA Bar, in the U.S. and Canada. This is due to the peanut butter used in production being from one [...]