Report "I light the pilot and set the knob on what temp i want it. that all works fine but when it reaches the temp i set it at it kicks off but instead of the pilot staying on it shuts off and i got to then put the knob back on pilot and re-ignite it and this happens every few minutes please help me with this problem that i have. p.s. it is new only 2 months old, the regulater is new and so are the tanks, and lines it was all installed proffessionaly it work fine up til 3 days ago"