I had no luck whatsoever with the Amazin Pellet Smoker thingy. May be an elevation issue - we're at 4500' or so. Ended up buying the cold smoking attachment (Amazon, again!) and we use it for all of our smoking. Couple of things to be aware of....
1. I've used both wood chips and pellets, and both produce lots of smoke. When using wood chips, I sort through and break up the larger ones to make the chips into smaller, lighter pieces. That helps keeping the chips from jamming in the chute. Don't pack them in - they'll get stuck. An occasional "stir" with the end of a wooden spoon helps keep them dropping to the heat element. Pellets work great, don't get stuck in the chute, and, with a complete "fill" of the chute last about 8 hours, great for an overnight smoke. If you are in a damp climate, unburned pellets will swell in the chute. Easy to clean out, but a waste of pellets. I "guesstimate" how much pellets I need for a particular smoke, then add if necessary. Since you're not opening the smoker door, it doesn't affect the cook time at all.
2. Don't plug both units into the same electrical circuit, and keep extension cords as short as possible. Be sure to use heavy duty extension cords if you need them.
3. Remove the chip tray from the smoker when using the cold-smoking attachment to increase the amount of smoke. I start with the upper vent wide open, then once smoke is well established, shut it half-way.
4. Try to use pellets made of only your chosen type of wood. Many of the cheaper pellets are mixes of woods and junk to hold them together.
5. Because you do not have to open the door of the MES to dump the chip/ash tray, you can keep the smoker closed the entire time it's cooking. No more 24 hour briskets! I use a Maverick 733 model meat/grill thermometer which has two probes. Once I cooked 3 briskets at the same time and used the Maverick for 2 of the pieces and the MES probe with the third. Remotes are wonderful things!!
6. To make it easier to access the smoker, we purchased the 40" stand. An upside down 5 gallon bucket with a piece of wood on it makes a good support for the cold-smoker unit since it "hangs" off the MES. Since the stand doesn't have wheels, hubby built a bottom platform using a flat moving dolly. Works great!
Can't take credit for all these ideas - most were from Amazon reviews, other forums, creative/crafty friends, et. al. Hope these help someone.