Im going to be cleaning my chimney for the first time in a few weeks and decided to see if my cleanout door rusted shut (again). Well to my suprise when I opened the door there was a big pile of creosote flakes?! I have severl times over the winter cleaned the stove pipe coming off the stove to the chimney and while it was off I looked up in the chimney to see what i could see. There usually isnt anything more than some soot and a few flakes of creosote. Is the normal? I try to burn as hot as possible for the first hour after I load the stove. Then i let it settle down to around 500 or so decrease. Would the hot then cooler cycle cause the creosote to flake like that? Should i be worried?