So I pulled the trigger and went with the Jotul F55. Loved the look as well as the small hearth requirement. Passed the inspection last Thursday, and so far I did three burns in the stove, as printed in the manual. This last one I got the temp of the exhaust pipe up to 300 degrees Fahrenheit. With my electric gun thermometer the stovetop never exceeded 278 degrees. After the burn I was cleaning out the inside (glad I went with the F55 over the F50) and noticed what appeared to be paint flaking off the back. Now I used some dry kindling to start the fires as well as small dry splits in the fires. I even used a stack of wood we bought 2 years ago at the grocery store. Is it normal? The outside of the stove looks great, I'm just worried I screwed something up. Could it be creosote from less than perfect wood?