My impressions are these,
Start with more lump, perhaps packed a little tighter.
keep your top vent all the way open, use the bottom vent(s) for control.
Keep the lid closed as much as possible, yes the Maverick will help with that.
Weber Performer with rotisserie ring, 22.5OTS, Maverick 732, Weber Smokey Joe,PBC Smokenator/Hoovergrill, variety of microbrews, Gin and tonic, variety of lighters.