I think what also stirs up dust is when the wood pops. Sassafras, Black Cherry and White Oak are rather "poppy" and may get dust airborne, to float up to the cat. If plugging turns out to be an issue, I would try adding a couple pipe dampers. Very simple to install, to see what differences they might make in plugging, burn time, etc...and easily reversible.Thus far, my stove is running like a Swiss watch, but it has only been a short while. What remains to be seen is if my chronic cat plugging issue has been resolved. I think it will since i only seem to need to move the damper between 0-20%. No high draft settings to entrain dust. At the end of a burn, I also rake the ash into the bin before loading more wood. This should also help minimize entrainment.