Assign a form to a custom post-type?

I'm just now starting to dig into the gravity ability to actually allow a user to create a post. Most everything makes sense to me, but I can't figure out where to tell gravity to force the post to a specific post-type.

In my scenario, I have building a form to allow users to upload 'testimony' post types. I do NOT want to simply use a category for this, but rather for numerous reasons need to use a specific post type.

Is this a hidden easter egg somewhere?
I see post types mentioned all over the place in the forums, but none mention how to set the form to post to a specified post type.

I have already created the post type, so I was expecting a dropdown somewhere to make the selection. Gravity does seem to pickup on all of my custom metabox fields without issue.

@Carl
If you need any extra help beta testing prior to the official release, I am more than willing. I have been running 3.0 since the alpha stage and quite active within the trac. I already have multiple sites using post-types, including multi-relational post types working perfectly. My understanding of this system is pretty good.

Example sandbox post type setup:
http://deardaddy.org/sermons/