I have a F2450m stove it worked fine for 3 months now secondary tubes do not re burn it burns like crazy till you shut the door then the fire dies way down.Two Regency techs look chimney is clean I am starting fires correctly my wood is two years old mostly oak.Regency installer Brad Barker is very rude blew me off after coming out putting a plate over the ash box .I started a fire after that let it burn wide open for 20 mins up to 600 went to shut it down to 1/2 it went out tried to let a small amount of air it exploded in to flames.So I was told to put ash plug back did that still can't use the stove without it being wide open.They also fixed the defector shield it was sitting on the baffle thst still didn't fix the issue it's like the burn tubes in the back are not working I have vacuumed them out Regency reps will not longer work with me totally ignoring me said I was stupid and should not burn wood.And off record guy thstvuse to work for Regency came watched it burn said I was correctly going everything and the stove is not working stop using it its dangerous.And should be replaced but the Brad Barker said I walking away so here I sit in the cold with 4000 k stove I can't use.Had it blown up in my face Regency you would have been open to a law suit.So I have to trash this stove and get another brsnd.Shame on you and your reps and your company. I wi be turning this over to Better Business Bureau