Lot of variables as mentioned I guess. Not really sure what you mean by to "roast beefy" I guess, it is after all roasted beef. Did you use a beef injection or broth? As for smoke ring, could be the amount or type of wood?
Weber Performer with rotisserie ring, 22.5OTS, Maverick 732, Weber Smokey Joe,PBC Smokenator/Hoovergrill, variety of microbrews, Gin and tonic, variety of lighters.