RIFF, do u have a moisture tester for the firewood? u most likely know this, but i don't want to assume wrong. those inserts require very dry wood. from what i have heard, 20% or dryer. most wood that has been cut and split a year or so ago will work. otherwise, the stoves with the insert tubes are hard to light and are less efficient.

those new efficient stoves are great if ppl have wood cut a year or 2 ahead. not so much if ppl are cutting in summer for the next winter thou.