Where is the dog house? I have been looking for the primary air intake but can't find it.
Dry graphite spray? I have graphite in a plastic tube that I use for doorknob locks etc. Is that what you mean?
How often do you do this maintenance? My stove is 2 years old, seems to work fine.
The "dog house" is just inside the front door of the stove. Its right above the air control lever. There are 2 bolts that hold it on, I think 10mm. Remove those and the small rounded cover comes off. It has 3 holes in it the size of a pencil. Down inside where the cover comes off there is a metal plate with 2 square openings on it. When you move the lever from side to side +/- it slides that plate to open and close the primary air . Clean out that area really well from ashes and debris and spray with the graphite lube. I bought mine @ home Depot. It comes in a small aerosol can. It should be near the WD-40 or pb blaster stuff. Or near the master locks. We commonly used it to lube master locks on gates. It sprays out graphite and a wet propellant/lube of sorts but after it dries it leaves the graphite where you want it. Like for locks it won't freeze in the winter like other lubes. Good luck and I will do my best with any other questions! Hopefully that was helpful. I can also post pics later.