I have Majestic RHEDV32 RP with Honeywell Millivolt Valve and remote control, pilot stays lit but the main burner does not. The controller LED blinks 7 times then goes off for few seconds and repeats. I have checked thermocouples, both appear to be working fine; I can measure over 325mV. I believe the problem is the gas valve; if so, how can it be replaced, if part was available that is? Like what would be the disassembly procedure? It is not clear at all from my owner’s manual. Thanks, -David