55 not keeping temperature up

The first obvious thing to check is that the meat isn't touching the smoker temp probe. It sounds possible, deeding on the size of your pork butt and the set temp you are smoking at.

There is not a visible temperature probe in side the smoker. I had a temperature probe in the smoker that was above the meat and I also had a probe in the meat as well. I had one sensor going through the vent hole and the probe going into the meat that I closed in the door. 

The butt was 12 pounds. I ended up stopping at 18 hours when the temp of the meat had stayed in the 130s for about 4 hours. This was after I finally opened up The smoker to look at the meat after 14 hours. it looked great when I flipped it and put in foil but when I finally stopped I cut it open and it was barely cooked. 

thanks 

OK, then I have to assume there is a controller problem given the multiple external thermometers. I am assuming you set the temp to cook at 225 or higher. I would suggest calling CS for advice. They are very helpful and know their stuff, and are willing to walk you through diagnostics if you wish. Good luck1

Thanks again. Yes, I had the temp set at 250 to start with 

Thanks everyone, and thanks to the folks at CookShack.  They answered my email with advice that it was probably the thermostat, so I ordered a new one and just installed it today and will be giving the smoker another try this weekend.  

Looking forward to actually getting this thing working