My Akorn has all gaskets sealed, including the bottom vent. It also has a Tip Top Temp. After grilling with lump the fire takes hours to die down. I make sure the TTT is shut as well as the bottom vent. There does not appear to be any smoke leaking and I can easily hold a 200-225 temp for hours. Any idea how to make the fire die quickly so I can save some lump and get the cover on this damp weather? Thanks!