Hello All, Need to tap into the collective here. I've got a gas water heater and the pilot won't stay lit. It just stopped working today. I can go through the re-lighting process and it lights up like it should. I turn the valve to the "on" position and the burner lights up like it should, but it all goes out within a couple of minutes. It looks like there's a small component (thermocoupler?) that seems to be pretty easy to get out. Is that the likely culprit? Anything else it could be? Also, is this a DIY project or should I call the pros out? Thanks in advance.