Hey guys, New guy here. It was 15 here last night in NC and thats pretty chilly. Im tired of the $250 heat bills so I purchased a englander 25-3800. After 3 hours of initial startup, I noticed some cresote leaking off the elbow of the exhaust pipe. The flue temp was rather low though around 200*. Ive run the hot air pipe into my supply side of my furnace, see pic below. The stove fan keeps it warm but to get it really good on a night like last night, I cut on the 1600cfm unit fan with the stove fan and man, she goes straight to 80*. My house is 2000sf with a 2000sf unfinished basement. Im getting some smells but I guess that goes with the territory. My home is 30 years old but the chimney has never been used, ever. Its the terracota lining? Is there any advice or tips you guys can help with? Im burning some pine and oak. All I could get on such quick notice. some of my questions are, should I trash the flex and go with real hot air 8 inch venting? Is the exhaust pipe ok? Its the 6 inch, 24 guage from lowes hardware? I didnt use any high temp silicone but I did use sheet metal screws and ring clamps just for my worrysome head. Thanks alot!