To help with temp swings I've also had moderate luck mixing lava rock in with the charcoal in my basket. Give it a shot sometime.
KCBS CBJ #56828
Team [URL="http://www.bigskysmokers.com"]Big Sky BBQ[/URL]
[B]UDS, Weber OTG, Maverick ET-732, Mega-Fast [COLOR=DarkOrange]Orange[/COLOR] Thermapen
[/B][I]"If I were just a bit more humble, I'd be perfect"[/I]