So I finally bought a maverick redi check thermometer so I had to test it out . I knew that my WSM 18 inch smoker was not registering the proper temps but had no Idea it was this off . It is about 50 degrees off . Well I smoked this butt at around 300 . I would have said 250 before I purchased the maverick . It was a 6 pounder and took about 6 hours to hit 200 internally . Came out great but I need to find a way to get the temps down without closing the vents completely . I am sure less charcoal and wood wil do that . This is my boy adding the rub the night before Now onto the smoker the next day Came out excellent even at the higher temps . Thanks for looking and any suggestions on getting the temps slightly lower without too much maintenance would be appreciated .