Recently I have been having lower stove top temperatures along with lack of rolling flames. With the primary on full it is struggling to get a decent flame going. With the fan off it gets to 450 (top surface temp near the front), then closing the primary, the secondary burn then kicks in but subsides. All this is indicative of poor draft but I am also having problems starting the fire without the door cracked open, which indicates a primary air issue. I have ruled out fuel moisture by replicating the problem with dry oak pallet wood. Taking out the bricks, I noticed three holes in the front, two of which were blocked. Is this the sole inlet for the primary air? I think they got blocked by my tendency to rake coals/ash forward in the am. While it is cold now, I am going to take a look at the flue connection. Any thoughts? This stove was working great, although not really getting above 600.