I've completed the mod and still having issues with my AMPS not staying lit for more than 30 min. Now that the AMPS is in the mailbox, can I use the water pan? Using the mailbox mod should I remove the chip tray (chip loader is removed)? I'm assuming my vent on the top of the smoker remains fully open, right? I've been using "Pitmaster's Choice" pellets, should I try a different wood to see if it burns longer? Last question, I've drilled 3 1" holes in the door of the mailbox. I figured that should be enough to keep a draft going, but I'm interested in what others have to say.