Alright. I said it was a stupid question, but here I go anyways. When I use (gasp) briquets in my chimney, common wisdom says don't put 'em in until they ash over. Right? Also, they pretty much hold their shape while they burn in the chimney. When I use lump & get it started, I fill the chimney to the brim, but...here we get to my questions.... 1) when do I put 'em in? After they've ashed over? When they're reduced to coals? While they're still burning? 2) Also, is there anything I can do to positively affect the volume of lump embers? I fill the thing up, but 20-25 minutes in the thing is like 2/3rds full after it's been burning a while. (Oh, and I've been using cowboy charcoal). Help. Thanks.