NDA Enforcement After partnership dissolution deadlocked

I publish illustrative scenarios prepared by my practice. All participants and conversations are fictional. The fictional posts are not posts by real users, accounts of client experiences, or reports of actual results.
Illustrative scenario prepared by my practice.
For informational purposes only. This is not legal advice. Laws vary by jurisdiction. Consult a qualified attorney for advice specific to your situation.
Hypothetical question

I've been trying to resolve this on my own but I'm stuck.

partnership dissolution deadlocked. I've been dealing with this for about 11 months now and the situation isn't improving.

The contract was signed 24 months ago. I am not sure I have the original signed copy. The total amount in dispute is approximately $42,000.

Do I have a strong case? What should my next steps be?