Glacier Bay Kitchen Sink Button Replacement

I've got a kitchen sink I bought from Home Depot ( http://tinyurl.com/oyklsha ), and the sink sprayer mode button was a terrible design. After a couple of weeks of use - it broke apart. I was left with a hole in the sprayer head ringed with sharp edges protecting the mode switch.

Failing to find the parts to repair, and not wanting to replace the entire spray head to fix one small broken part, I cracked open Fusion 360, and took a stab.

This part is more complex than my average design, a