Survivalgene:
Was the dirty flue the problem as the only thing that affects is the exhaust draft and if you have a draft diverter on the exhaust flue, that should compensate unless you have dead critters or other obstructions in the chimney itself?
I don't know where you live, but usually there are no laws against eating cats.
Bountyhunter <img src="/images/graemlins/crazy.gif" alt="" /> <img src="/images/graemlins/wink.gif" alt="" />