40" MES taking a very long time to finish meat

[purplehayes]

I've got a 40" MES and I use a modified masterbuilt cold smoker attachment. I've also added a PID controller because the original controller went out. I'm getting very good results but for some reason everything I smoke is taking way longer than expected. 7 lb pork butt took 18 hours to hit 200 internal temp.
I have verified the temperature that the controller is showing is correct. I'm using a water pan during the smoke.

I did pork steaks today in the MES and in a char griller akorn. The akorn had the steaks done a full 2hours before the MES.

Anyone else have issues like this? Any ideas?

Thanks.

 

[SmokinAl]

What temp did you smoke the butt at?

18 hours for a 7 lb. butt is not unusual, especially if you are smoking it at 225 & didn't foil it.

Al

 

[purplehayes]

I did it at 235.