I have found that using the upper shelf gets more airflow around the meat than the lower shelf. I asked the AmazingRibs.com science advisor Prof. Greg Blonder about the problem (he has a MAK 1 Star). He explained that smoke sticks to cool surfaces and wet surfaces, and the surface of meat warms and dries out after a few hours. When he wants more smoke flavor he uses a strong smoke wood like hickory or mesquite, he starts with cold meat, and then he keeps the meat moist by painting or misting it with apple juice or a mop like Lexington Dip or East Carolina Mop or Texas Mop Sauce. A awter pan can help because the water condenses on the cool meat and attracts smoke. Read his detailed research on the subject in my article on the Science of Wood and my article on Basting.
Some cheaper models, such as the Brinkmann, have a controller with only three settings, Low, Medium, High (LMH), and there is no temperature probe in the oven to create a feedback loop. We do not recommend these units. You actually have less control over temp than you do on a gas or charcoal smoker. The whole reason to buy a pellet grill is because it is set-it-forget-it and it hits a temp and holds it regardless of the ambient air temp outside, winter or summer. On these LMH controllers, the temp fluctuates widely and it cannot correct itself for the weather. They just aren't as smart as a digital device. Whether you're smoking a few slabs of ribs on a scorching summer day, or six pork butts during a blizzard, the three position controller only knows auger on and off times for Low, Medium, and High. It has no information on the temperature inside the cook chamber.
My propane smoker lived a good life, but after just 18 months it's another rusted out piece of junk that's was unsafe to use. I wanted to replace it with something that would last so I began researching the internet. I was delighted to stumble upon 1) pellet smokers and then 2) the Yoder 640. This is a premium price item that had me wondering if I should spend that much, but I was sold by the online reviews and YouTube video's. ATBBQ had it at my house in less that 5 days and the build quality, ease of use, and the food it helps produces are all second to none. I'm thrilled companies like Yoder can build the best products in the industry right here in America! Its a large investment in cooking, but worth every penny.
Still loving it after cooking about 100 meals. Thru rain, snow, and the occasional nice day it is still going. Today I'm about to grill brats. My weber grill sits around rarely needed so it's going to get sold. I discovered with quality pellets it can grill just fine to temps up to 450. The camp chef grill cover keeps the pellets dry in the hopper so I don't even take them out unless you want to change flavors. I did have to seal the hopper handle around the rivets to keep the rain out but other than that it is very tight. See the pic makes smoke like crazy.
With 341 square inches of cooking space and a digital control board that sets the temperature from 180 to 500 degrees, you’ll be cooking whole meals in this grill, even though it’s the smallest model that Pit Boss makes. It will hold up to a dozen burgers for parties, or a chicken and vegetables for the family dinner. When cooking is done, the porcelain coated grill grates are easy to clean.