I'm having trouble with my Ambient temperature dropping when i put the meat in the smoker (Bradley Smoker w/dial control). I get the temperature setting stabilized at 250F. Within an hour of starting my cook the temp drops to ~190F. I spend the next few hours trying to control temp. I was thinking about staring my cooks 25F hotter so the drop isn't as drastic when i load the smoker. How do other electric smoker owners deal with this TEMP drop?