From Amazon reviews.
I bought this Gen II as a gift for my brother, thinking that Masterbuilt had solved the only three problems I found with their Gen I model (which is excellent, by the way), those being 1) the vent and electronics module were side-by-side on the top rear of the unit which allowed smoke to get on and in the module, possibly shortening its life, 2) the heating element was non-replaceable, and 3) the external grease tray was rear mounted meaning it had to stand away from the wall and was a bit of a pain to dump, clean and replace.
Well yeah, they did fix those deficienciesand then broke everything else. They admit that they have a known problem with the heating element being too far below the chip pan on this model which means the chips don't smoke consistently or burn completely and are now recommending that you cut or bend the element support to either raise the element or lower the panI honestly can't remember which. The chip tray is very shallow and a fourth the size of the Gen I tray, meaning you have to put in new chips every 45 minutes instead of two hours (after you jury-rig fix the element problem). The entire interior lower section below the four smoking racks is re-arranged, including the water pan, which is also down-sized to a narrow deep rectangle contraption instead of the nicer stainless tray in the Gen I, and is now positioned off center to the left, not over the heating element, at the down angle of a new drip protector over the heating element and chip tube, and acts as more of a a grease trap than a moisturizer. I could go on, but the net result is that Masterbuilt took one of the best (if not THE best) electric smokers on the market and TOTALLY SCREWED IT UP!
I really can't imagine a company like Masterbuilt sending out a model revision without field testing it first, but that is obviously what happened in their ill-conceived rush to get the new model to market. This baby had to have been designed by some armchair engineer that can't spell "smoker" much less know how to use one. Save a ton of money and angst and get the older model that is still available on Amazon (for much less money). In as much as there are still the issues with it, at least the darned thing SMOKES!