Hi Jeffery
Here's the form : http://www.robovent.com/drop-us-a-line/
Nothing hidden on this one.
Name - First / Last
Email
Message
This form submits to a second form which has the same 3 fields which are hidden and shows 2 additional. (Don't ask why they are doing it this way - I know it's bad)
If I was to delete the current lead entry in Marketo and submit this form, the entry would make it's way into Marketo, but if not, the entry will get submitted into Gravity Forms backend, but not into Marketo.