I just picked up a 5100-I locally for $250. I rebricked and painted it so it looks perfect and I feel like I got a great deal except I can't seem to get it to burn well. The fans run nice and quiet the problem is when I shut the door completely it seems to choke out the fire even with both pushrods in. I can see the smoke cascading down the window but it doesn't seem to be getting enough air. I'm burning small bone dry scraps of walnut/ash lumber for test wood. I did only have a two foot stove pipe on it and I'm wondering if the added draft from a taller chimney will make a significant difference or if I have a problem to deal with. I expected this stove to be more finicky than my englander 3500 but I can't even seem to get it to burn. Any advise would be appreciated my only ideas are a taller flue which it will have when it is installed or maybe a rodent nest or other blockage where I can't seem to get at it.