I've used my OTG but I use a piece of expanded metal (shaped like a half moon) to keep the coals to one side. I usually use a foil loaf pan with water on grate between the coals and food. Keeps it from scorching the food. Works great.
You could try some tin snips and remove some of the metal on your smokenators to allow more heat production
Green OTG; Black OTS; UDS; mini-WSM; Weber Genesis Silver; USMC 86-94