Was having trouble keeping pilot lit on water heater. It would light just not stay lit. I went and bought a thermacouple & put on. Lit easier but went out. I tried to relight it and I can't even hear the gas coming through for pilot? Just wandering where to go next. After I changed the thermacouple it seemed to take 3 or 4 pushes of pilot button before gas was coming through. Any info. Would be great. Thanks, Robert