i agree. don't repair. replaceSaw it once and it was frightening. There was a black soot trail that ran from the combustion chamber door up the face of the wh for about 18". The thermostat control on the front of the gas control valve was warped from heat. The ho had enough good sense to shut it down and call me. Someone may say different but when I see something like that, I would never trust any repair. Replace it.