First season with PE Super 27 and I've found that on a full load the stove will hit 700 and even 750 for probably an hour or so pretty consistantly. I've tried getting the stove up to temp slower than I had been thinking that maybe I was heating the stove too fast causing the temps to climb to high but the stove would eventually get right up there, it just took longer. This is with the primary air closed all the way once the secondaries kick in. The wood I'm burning is 2 year old red oak mixed with standing dead cherry, maple, red oak and white oak that my MC tests have measured between 17% and 22%. Somtimes on a cold start the stove will max out at 650 which is much better but on a reload it will spike up into the 700 range. The chimney goes right up through the middle of the house and is 42 feet high with the stove in the basement. It's a masonary chimney lined with clay tiles that are 11"x7". Is it the hight and flue size that is causing the stove to run hot?