Helen's Hint probably found this thread when searching the forum for her(?) stove, and is obviously not happy with the heat output. She thinks her wood is dry, but won't know for sure without, as redktmrider said, getting some of her larger splits to room temp, re-splitting, and testing on a freshly exposed face with a moisture meter ($14 at Harbor Freight.) She may have been getting away with burning marginally dry wood in the old cast iron smoke-blower stove, but it ain't gonna fly in a modern stove that relies on re-burning the smoke to produce heat. My cat stove, with wood that was around 20% or slightly over, would only get to about 450 on the stove top, over the cat. With the 16-17% wood I'm now burning, that spot on the stove top will go 600+. Heat output loss might not be quite as bad with her tube stove, but it will still make a difference.
@Helen's Hint, are you getting big secondaries shortly after you load the stove?[/QU
The firewood that I've been using is seasoned and this problem is truly with this particular woodstovestove.