Masterbuilt 44 inch propane smoker
I quickly discovered that the chip tray, bracket and heat deflector assembly is about as useless as brakes on a boat. I stripped all that out and chucked 'em in the dumpster.
I pulled the burner guard and burner assembly off. After a few critical measurements, I cut a section of rack from an old smoker, installed it and reinstalled the burner assembly and guard, trapping the rack section in place.
If I want to cold smoke, I just lay my AMNPS on the rack. If I want to hot smoke, I use my homemade 'smoke pot'. I bought a 1.5 quart cast iron bean pot and drilled four 1/4 inch holes in the lid. Fill it with chips, put the lid on, lay it on the rack over one of the burners and in a few minutes, I got smoke.
I also use a propane regulator with a needle valve on the down stream side of the regulator. I can turn the fire down so low, the box won't break 175 degrees.