I noticed the other day when cleaning the stove, If you open the door to the fire box, and look at the 1/8 inch gap for what I guess is the air wash, how do you clean this. I shined a flash light down in there, and it goes down about 4 inches or so, and I can see fly ash down there. I tried to suck it out with a shop vac, but no such luck. I am wondering If you could take a very tiny piece of tubing and try to suck out the fly ash. If that does not work I might try to take a air compressor and blow it out. There is not much down there, but I could see where it could accumulate over time. It is such a tiny void, with no access!