I have modified my Smokey Joe Platinum similar to the way J.D. McGee did in this thread over on the Weber forum:
http://tvwbb.infopop.cc/eve/forums/a/tp ... 1480032135
The biggest regular bit that I had at the time that I did the mods was a 3/8th" bit. I'll either enlarge the holes in the bowl with my Dremmel, or I'll buy a bigger bit and drill them out even more. The small holes improved the air flow greatly.
I christened the modified version tonight with some Publix Greenwise ribeyes. I also threw on a small top blade steak for my special assistant. She was pretending to grill on the Smokey Joe Silver.
The charcoal was Publix Greenwise lump charcoal. This was the first time that I had used it, and it gave a nice flavor.