Membership 2 Modify Fields on Registration Page

Hello,

I have custom coded quite a few extra profile fields for our system. The only problem I am having is that I cannot figure out how to get those to appear on the registration screen for membership 2.

I am happy to write my own custom code, but I am having trouble figuring out where to hook in to get those fields to appear and save.

I cannot seem to find where the templates are located that generate these pages.