Second year into using the stove, naturally, as wood gets dryer and dryer, we are reaching higher stove temperature, last year was hovering 450-550 or so. 2 yrs old ashes and 4+ years oak and maple pushing the temperature up to 650-700. We freaked out once we hit 600 late last year, only to find out from some of you kind owner of the same model that this is a norm for this stove and it's humming along just fine. Next year, the stash will easily get sub-20% MC, with fully loaded stove, at what point (temperature) should I be concern overfiring it?