I am curing my new smoker tonight ahead of it's first use tomorrow. Any advice? I was going to wipe the inside of the cooker with cooking spray, bring it up to around 225 for 2 hours then up to around 400 for an hour then let it cool over night. Any tips out there for getting getting the charcoal out of the fire box of an offset smoker after smoking? I have read that closing all the vents will smother the fire out so it will cool faster but I have also read not to do that, any advice there? Thanks for any help!