I am using a GOSM with the original wood box. I use wood chips similar in size to what you put in landscaping. I tried the more shredded stuff my first time but that seemed to not last long. With the larger chips, I get smoke longer but not by much. I only get about 30 minutes of smoke before I have to add new wood. Is this a problem with size of my wood box or something else I'm doing wrong. I wish the wood box on these were accessible from the outside w/o having to open the door. Anyone mod something like this before? Pull out drawer on the side maybe? Thanks all.