Jeff,
Check earlier postings, as I will, but if I recollect correctly, it is recommended that one run some amount (1 chimney ?) of coals at top temps under sand once before using for first smoke. Kinda like boiling water I guess.
BTW...picked up my sand just the other day and have yet to put it in place. /infopop/emoticons/icon_rolleyes.gif
Howard...I'm almost afraid to ask...YMMV? But I do like "Smarter than...", could not remember having ever heard that before. HAHA.