My CPA charged me over 20k for contingent fees based on a percentage of a refund to be received for a carryback NOL. I did not know this was not allowed until I got a new accountant. He also then forged my name on a power of attorney form in order to redirect my refund to his office. He then held my refund until I paid his fee and we exchanged checks. I would like to sue him in small claims ct for return of the illegal contingency fees. What would be the best way to demonstrate his misbehavior to the court? I have invoices where he said he was charging a contingency fee, but is just showing the invoices and the state code saying contingency fees are not allowed sufficient evidence? Should I even get into the forgery part since that is not part of the claim for damages?