So it appears the old Kamado Dragonfire smoker had a gap in the seal between the vent and the vents housing open at the top. It opened up about 20 minutes after I put on a pork butt just shy of 8lbs. I had it cooking nicely at 210* or so and went back out to check about a half an hour later and the vent was gaped (peeling away from its housing) I closed all the vents.....tried super glue and tape, finally settled for a large brick to weight it down.
With all the air exposure, the temp had spiked to close to 400* for a maximum of 30 mins, I have it coming down now at around 280* or so. I know butts are fairly forgiving, but how is this likely to affect my cooking time? I flipped over the side that was closest to the fire when I made the "repair job"....doesn't look terrible, but appears to be further along than I would expect for 1 hour in. I was planning on eating around 7-8 tonight.