Newish woodworker here.... I just received my first table saw. I went with the Grizzly 1023SL and I have a question. I've read that the extension table that will fill the space between the rails on the right is easy to make, but I can't find any information about how to make it and how to attach it to the saw. Do I drill holes into the right cast iron wing and if so, do I tap them so I can screw into them or just put bolts and nuts on? Is there any trick to building it and attaching it so it is level to the cast iron wing?

Sorry for the probably novice questions.

Lance