Hello to everyone, I have been snooping around the forums and finding a lot of great info so I decided to join and see if someone can possibly help me out. My predicament is as follows. About a week ago I picked up and installed an old fisher baby bear into my fire place. I went with the fisher because I am cramped for space as you can see in the pics and I wanted to be able to use normal log lengths (I also got a good deal on it re-finished). My house was an old camp the original owner converted to year round and he did everything himself so I have been going through and trying to right everything he did wrong. The fire place was originally cinder block and poured concrete which I had re-faced in cultured stone. The chimney is outside of the house and is also made of pured concrete but it has a clay liner which is in good condition. A couple days in all is well and the house is nice and warm and I'm learning how to run the stove pretty well. I decide to go have a peak at the chimney cap and you can see in the pics what I find. It appears as though creosote was dripping off of the cap and on to the chimney. Some of the drips were sticky but some were just water and soot. I havent run the stove since I noticed this. I have kept the stove pipe temps right around 400 degrees and the stove top temps around 550 to 600 degrees. I am burning well seasoned red oak as well as some very dry silver birch. What I figured was going on is since my cement chimney is outside the house and the outside temp is around 30 degrees the chimney is too cold and I am condensing a lot of the smoke forming the creosote like drips. I have been told installing an insulated liner will take care of the problem as it will help maintain higher flu temps. Any help would be greatly appreciated since I am listening to my furnace run as we speak. I have included some pics to help diagnose, some of the photos show some black splatter on the inside of the fireplace that came out of a spot where the stove pipe enters the flu.