Yesterday, I prepared my first Prime Rib on my PG1000. I attempted to follow the Prime Rib 101 tutorial and directions as analytically as possible. After several hours of LHT and HHT adjustments and mapping out the resulting temperature excursions, I was forced to conclude that I could not get a temperature below 199F. This lowest temperature (199F) showed temp variations from a max of 217F to a min of 192F with a measured temperature at the indirect side grate of 199F. Set point was 180F and LHT=5 and HHT=5, and I used Cookshack Hickory pellets. Ambient temp was 74F, and my elevation is 6,400 ft above sea level. I had no burn out problems or fire loss issues. I wanted to use Smokie's suggested temp of 180F, but couldn't get it down. The net smoking time, including a 30 min. sear at 375F, to bring the roast from 110 to 125F was 5 hours.
Any suggestions as to what I did wrong or personal tricks to lower the temp to 180 for 4 to 5 hours would be greatly appreciated. The prime rib turned out beautifully!
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