I had A repair guy at my house the other day to take a look at a creosote issue in my p68, and he saw my feed rate at 2 and a half so he told me that was to low, which is most likely true, I had it that low because my pellets are energex and are cut small. Anyway he told me that Harman sent a memo to all it's dealers changing recommend feed rates from 4 to 5. Well anyway he set me at 5 and started it up it filled the newly in stalled burn pot all the way to the top and then some, with even a few going over the edge. When the fire started it was huge and all most instantly blackened my glass.Seems to me thats to high a feed rate at-least for a start up. you should never be sending unburned pellets over the edge, right? Footnote after receiving a new burnpot, mine had the lower 4 holes, and was on recall, with a much needed burnpot gasket as well as me changing door gasket and esp censor my creosote issue still persist. Can't seem to figure that out yet but I'm far from giving up!