Ive had my SI2 for a couple of years now and its been great. I got the Auber PID last year and run at 225*. I just smoked a 10lb pork butt and expected it to take 12-14 hours, but for some reason, it took over 21 hours to reach 200* on the Auber probe. I checked with my instant read thermometer during the smoke and it was within 1* of the Auber. Around the 15 hour mark, the temp actually dropped from 184 to 178. I expected it to be ruined, but it was actually good, maybe a little drier but still fairly juicy. I've never had anything take this long, not even brisket, any idea what happened?