Went out to check camper after cold night. Had a ceramic heater on the hot water tank which was full. I noticed a small drip coming out of the top right fitting. I think it was the actual plastic fitting, so I put plumber's tape on it and screwed it back on. Since I drained the tank to work on it, I'll leave it that way overnight. Tomorrow I'll fill it back up, but dang, if it's the actual hot water heater (metal right by the part that sticks out,) is there a type or "fix" without spot welding it? Liquid nails maybe?