Hello all, I have Hearthstone Phoenix Stove. Recently I've upgraded my chimney setup from an exterior block chimney to an interior Class A chimney 14' straight up. After the initial startup I've noticed a tremendous difference in heat output and draft that I haven't been used to over the past couple of seasons. My questions is, after loading on a bed of hot coals and cutting back air intake more than 1/2 to 3/4, will regulating the burn lower the stove's top temperature? The temps usually will maintain 400 to 425 even when it's cut back. Is this normal for the stones to stay in this range?The gaskets were replaced last year, no signs of wear yet. Will usually get 3 to 4 hour burn times on 2 to 3 pieces of wood. Anyone help/input would be greatly appreciated.