I'm a newbe at this. I got a Broil King Propane Vertical Smoker, model #923614, for Father's Day. I've been really looking forward to "smoke'n" Assembled it per Instructions Checked all Connections, Ran it on HIGH to burn off Manufacturing residues. all good. Tried to season it with no meat inside. and was never able to get the internal temp to stabilize below 300 deg F. Not a good smoking temperature!. There are no adjustable vent at the Bottom (Just a fully opened one). Top vents fully opened.Chips in the box, no water. What have I done Wrong, or What can I do to get the Temperature down. HELP! Too much of an investment to kick to the curb.