After scraping the burnpot on my Harman with my scraper and a flat blade screwdriver, I find that I can't really do much with those two tools about the carbon build up in the auger tube and on the auger itself. I thought about just burning it off periodically with a butane pencil torch. Is that a reasonable thing to do? It won't get too hot and damage anything will it? Do other people do this or am I overthinking by doing it at all? Thanks.