Took a few tries to get it right.  The food tastes great.  I burned a few more pucks than I should have getting use to it but I think I have the hang of it now.  I have purchased the metal pucks to push the burn ones through as the last two don't burn they just push the first three though.  Haven't tried the metal pucks yet..  I like the fact that the outside is cool to the touch.  Won't burn curious people checking out your smoker.