Report "I have a pro com md5tpa-bb heater. I am using LP gas and I followed the convertion instructions. the heater worked fine for about 1 month. Then when the heater was lite the pilot ligth would burn perfect as long as it had lp gas but when the inferred bricks lit weather via thermostat or manual the flames would rush out of the top of the heater. also would flutter vary bad pop back and try to burn at the burner orfice is. What could be wrong?"