i have a new 100 and have tried to use it twice. First time with chickens at 325, went out to check on them, the unit had shut off. Cooked chickens in the house in the oven. Yesterday intended to smoke a pork loin, set temp at 250 and it shut off before reaching temp. This is my second one. First was purchased in 2007, finally figured out the rack placement, it had two levels for suspension. My brand new unit only has the one set of studs to suspend the racks. Has anybody had this issue with the new unit? My old one was stolen, new one was replaced by insurance. I had higher expectations for the new unit. Very discouraged with this new unit. I have not talked to CS tech support. Will do asap. Thank you for any advice you might offer.