I completed the install about 10 days ago and everything has been great until yesterday. My stove sits on my fireplace hearth and I have a 6" liner up my 28' interior chimney. Fires have been easy to start and I have been burning the stove mostly at 400-500 deg. burning red oak that is a mix of seasoned and partially seasoned splits. Yesterday I had a bed of coals and I shut down the air and left it to sit all afternoon. I came home last night and I could not bring the temp up no matter what I tried. Except opening the ash door. The fire would blaze like crazy if the ash door was open. Shut that and the flames would almost completely go out. I went to bed with the air control open all the way and let it burn out. This morning I cleaned out all the ash and tried to start a new fire. I cant get a fire going even with my tourch. Ash door open, starter air vent open and air control all open but It will not stay lit. Something has changed. What could it be? Everything was perfect and running great for the last week or so. Now I am stumped..............Anyone have any suggestions.............