Problem cleaning my PE insert. I have a 6" round liner that goes into a 6"oval at the point of the old flue opening (brick chimney) and back to round 6" at the top of the stove. I cannot get my brush into the oval section. It feels like the rope on the end of the brush is catching on something. I can't get it through from the bottom either. I'm using the soft 6" poly brush that is recommended by everyone. Any suggestions on how to clean this? Should I get a 5" brush and clean from the bottom? So far I only have about a cup of ash but I want to make sure the oval section is clean.
Thanks!
Thanks!