I am a long time burner with the old 3 button 6039 burning pellets and I love it.HR 1 set at 9 with draft set at 1 running 225 degrees(nice flame and fairly clean glass) fan set at 9.No OAK- no draft kit.Here is my issue.My son inherited a 5502 and I am trying to help him set it up.It is running without a thermostat for now.The flame is not steady .As the pellets drop it flames up and then dies down but doesnt go out.Is this normal or should it be steady? I looked through the forum and found how to adjust feed HR 1 and aux +- right?Also it would seem if he turns up his room blower it it disrupts the firebox.Any ideas?