I have an old Smokey Joe, wood handle model. Same problem. Always had to leave the lid half cocked so it would vent better. If I didn't the coals would peter out. Well, one day I prolly had a couple too many & took a step drill bit to the lid. Four more "strategically" placed holes in the lid & a couple more in the bottom for good measure, problem solved! It's amazing how well these lil' buggers cook! Cheers!!!
If Homebrew & BBQ aren't the answer, then you're askin' the wrong questions... Cheers!!!