Hopefully I gathered the right parts needed. Installed the gas line plug. These are the parts I gathered. Hope they are the right ones for the job. I am waiting on a hole punch to arrive in the mail today so can start drilling.
Bruce,
It probably is not the best way for it is still a little loose but if you prop the shelf up high enough when you drill the hole it, the shelf levels off okay to my liking. I did a better job on the left side then on the right side as you can see.