I could really do with some sound advise here. I have a Vermont Castings Intrepid I and the bloody thing always dies with the doors shut with the vent at the back fully open. It's not even that good with doors open. Admittedly i have installed it myself but the chimney has been swept it does not need lining and it was tested to make sure it draws sufficiently, which it does. I thought i would have solved the problem as there was no registration plate but i have just gone to great lengths and fitted one sealing off the chimneyand all the connecting flues. Only this evening i eagerly lit my first fire of the Winter fizzing with anticipation only to be have my hopes dashed as when i shut the door, instead of the fire roaring merrily it started to slowly die. Could it be something to do with the vent being at the back of the stove. I know it's clear as i've had the hoover up there and cleaned it. I'm really stressed over this as i'm a tree surgeon and have a limitless amount of wood at my disposal and this stove just aint cutting the mustard. It barely heats the front room when it should be heating the whole of the downstairs. Any advise would be greatly apprecieted before i bring out the sledge hammer