I think that @webby3650 has said that he can burn in excess of 20% with no problem. I like my wood about 18% but 20% isn't a problem. Just takes a little longer to burn in and there is a bit of hissing and maybe a little moisture coming out of the ends of the splits as the wood starts to burn. You can't just test one split, you have to test a bunch, especially the big ones in order to get a good idea where you stand.
You won't get much heat bypassing the cat. These stoves are designed to burn smoke and extract heat in that way. You can burn marginal wood but you might want to pick up some compressed (100%) wood bricks to get you through this season if you find your wood not burning well. We've all been there...and we ain't goin' back!
Understood. I may have to buy a load. Ironic as I have tons of wood and several nice red oaks down in my back yard from storm damage. Hopefully by next year I will be good to go.
Problem around here is that people advertise “seasoned” and it’s been split 2 months. Or they assume because a tree was dead/dying it is good to go.
Nonetheless when I get some good seasoned wood I will mess with the cat.
I want to thank you all for the help and advice. You all are great!!