Here was my solution to the holes in the base.
I solved the center hole with washer and bolt.
Then I spied a scrap piece of a tamale pot bottom from an older mini wsm project. I decided to just leave it in a Swoosh pattern
Doing some last minute cleanup, etc and getting it into service.
BTW, I have never used a WSM before. Just a UDS.
It wont be perfect, but I will post pictures soon of the finished product