I recently broke in my new Old Country BBQ Over & Under and used Kingsford blue bag for my coal bed. Used a chimney to start it and then added oak splits as I went thru the 8-1/2 hour cook. The firebox runs the length of the cook chamber offset below the back side, so the coals were spread all across it. There was a lot of ash from the charcoal. I had to pull it out several times from under the fire grate/plate with an impromptu "ash puller outer thing tool" to keep good air flow. I've only used a vertical gasser until now, so I'm a rookie with a charcoal/stick burner. Is lots of ash to be expected with Kingsford or is that something common across the board? Are there brands that don't make so much ash? Perhaps lump would be the way to go?