Hello and thanks in advance for any advice. So heres the story, chimney was installed last year. I had it installed straight out the back a vintage Jotul 8 in nice condition. The pipe goes straight up about 30 feet. Worked beautifully for a year - once in a while had to heat up the stove pipe with paper to get it going but besides that burned like a dream. Fast forward a year someone recommended a damper and being the newbie I am did not know you cannot do that with a pipe going straight out the back. Smoked like crazy so replaced with new pipe with no holes and now it is smoking like crazy. After having the chimney cleaned and inspected and trying to figure out what the heck the issue is I took a short level to the pipe that starts from the wall and goes out of the house I believe its called the thimble. It has a really bad downward slope - the bubble goes all the way to the left when looking at it from the right side. The pipe coming off the stove is fine - coming up about 1/4" for 18". Can anyone recommend how I might fix this myself? I'm quite handy but I'm at a loss here...Ive spent $175 on the chimney sweep and would love to fix this myself. Thanks again for any advice.