Hello Friends: I have been learning the nuances of my new stove for nearly a full season and am happy with it in all respects. I can burn it hot or warm, catalytic or not, and it all works great. One thing I have noticed though: When it has gone completely cold and I'm shoveling out cold remains, there are a not insignificant amount of chunky black coals....light, mini-briquettes if you will. There will be grey ash too, maybe a 50-50 ratio. Everything is stone cold so the burning process is over. How do I get to 100% ash?