In some ways, I've been going through this as well. I'm happy to say that I have finally found my StoryForm.
Something that helped me immensely was jumping around the different approaches available in the software. It seemed that I would often hit roadblocks because I was trying to force something. If that happened, I would try from a different direction.
For example, I went from the Story Engine to the Main/Impact option under Characters. I fiddled around with the StoryGuide, and I created all my Driver Characters and Passenger Characters.
I must have thought that I had the right StoryForm about 5 times before it finally clicked. I must have tried to arrive at a final StoryForm 50 times. It may be that one of your Givens is false. There was a temptation for me to check each box and stop thinking about it once I decided something was true.
For example, I decided that my StoryForm was very similar to the Wizard of Oz and because of this, I decided that Fixed Attitude worked with my OS Concern. And this almost carried me to the end of my StoryForm. It got me so close, but I finally realized that Situation was a better fit because the Inequity was external and real rather than a perspective due to a Fixed Attitude.
I struggled with my MC being in the realm of Manipulation because it seemed to limit him from actively driving the story (which has a quest component). However, I realized this was because I had erroneously identified what my Inciting Incident would be. One of my foundations was off.
Another thing that helped me out was seeing if I could arrive at the same StoryForm taking a different order. I sometimes started with Concerns, but other times I decided to focus first on MC Problem or OS Problem or from the Main/Impact option under Characters. There were certain aspects that I was really sure about and certain aspects that became clearer as I attacked from different angles.
I was able to reference a list of Gists online which helped me get a feel for where the different categories could lead me. I don't know if this webpage is considered Canon around here in regards to Dramatica, but I needed some way to fill in the blanks since I use the Windows version of Dramatica.
If anything, this page made me more comfortable with bending concepts as needed or seeing them in some ways that I didn't think of on my own. It certainly helped me eliminate things that were impossible for the StoryForm I wanted.
As mentioned before, I questioned some of my basic Givens. I ended up discarding the love interest as the IC because it just didn't work. I wanted it to, but it didn't.
I flirted with making my MC the IC rather than the Protagonist, but I decided against it -- because I have a very specific POV that is necessary for my story.
I'm an actor and filmmaking -- at least by education and history. I see stories as visual, living, and breathing things. I think that modern novel writing has shifted to a very visual style of writing (or maybe it has always been that way). I am surprised by how much novelists are borrowing from screenwriters and filmmakers (or perhaps they have always been this way -- but I feel like the world of ADD and ADHD have changed sensibilities in regards to the novelistic narrative).
For example, I found K.M. Weiland's revelations as being very basic though she says in the article that her understanding was even more limited when she wrote her book How to Structure Novels before she had written the article:
It is like she finally got around to reading Syd Field's book and everything became clear to her. I'm not knocking her. She appears to be a very successful and active writer. I'm just surprised some of the things that I consider to be pretty basic are revelations for her.
Anyway, pretty longwinded, but try attacking it from different angles and in different orders, try examining your Givens, and try taking a look at the Gists if you don't have access to them with your version of Dramatica.
Caveat Emptor: I am newer than you in regards to Dramatica.