Hello Rob,
Have you ever considered using Dynamic Views? View form Results in Dynamic Forms is very limiting, you can only do so much with this small reporting segment in DF.
You should give Dynamic Views a shot, you'll find that the reporting features are much more dynamic and flexible than that of View Form Results.
You can download a free trial version from here:
Dynamic Views 21 Day Trial VersionIf you need any assistance configuring the Dynamic View please let us know so we can help you get it configured. Once you go the Dynamic Views route, you'll never want to go back to the View Form Results feature in DF.
Let me know if you have any questions.
Thanks,
Ryan