I need to drill some holes for my magic wire shelves. I've experimented with a few different tokens such as the Associative Construction Holes, Associative Drawer Slide Holes, and Adj. Shelf Holes. Each one of these has solved one problem, but created another for me. Can someone help me in finding a way to create this machining?

The problem lies in the fact that these shelves aren't touching the sides of the cabinet. So I don't think the construction hole token will work.

I cant seem to get the Z Location figured out on the Adj Shelf Hole Token either. See pic. wont allow me to use a negative number here, which means I can't center the hole on the edge of the shelf.