We need some more info.. You and Amishdude are the only members with this stove... so here are the questions:
What height and size is your chimney, is it inside or outside the house?
Do you have a barometric damper installed, or any damper,
Have you checked your draft in the stove or chimney? This requires the use of a Manometer.
How much coal are you adding to the stove,, this is a Hopper feed stove I think, is the hopper full of coal??
Where did the coal come from?? is it a brand-name coal? Or what breaker sold it??
Tell us what proceedures you are using to start and maintain the fire,, shaking and loading schedule etc..
With the above info, we should be able to help. The stoves look like a very nice unit,, this is probably a chimney/draft or coal issue.