Because I'm in a helpful mood I guess...
If you burnpot is easily removable, when you clean your unit, remove the burnpot and put it in a container of warm water (covering it completely) and let it soak while you clean your stove and when you are finished cleaning, remove the burnpot from the warm water. Any hard carbon will flake right off. Follow up with a piece of coarse Scotchbtite and scrub the inside of the pot to remove ALL the leftover carbon, dry it and reinstall a nice clean no carboned up pot. Been doing that for years. It works very well and no tedious scraping or chiseling off the carbon.
Your stove will appreciate a clean burnpot and it will heat much better too.
If you burnpot is easily removable, when you clean your unit, remove the burnpot and put it in a container of warm water (covering it completely) and let it soak while you clean your stove and when you are finished cleaning, remove the burnpot from the warm water. Any hard carbon will flake right off. Follow up with a piece of coarse Scotchbtite and scrub the inside of the pot to remove ALL the leftover carbon, dry it and reinstall a nice clean no carboned up pot. Been doing that for years. It works very well and no tedious scraping or chiseling off the carbon.
Your stove will appreciate a clean burnpot and it will heat much better too.