First, welcome to the Forum!
In answer to your question I can recommend a 2A-friendly guy that has been interviewed on Gun For Hire Radio with Anthony Colandro, attended NJSAFECON as a vendor to reach-out to firearms owners, who specializes in this sort of EVAL and who's practice is recognized by the state of NJ as providing expert evaluations, testimony, documents, etc.: Gianni Pirelli in Verona, NJ. https://gpirelli.com/?page_id=959
Whatever he wants, just write the check. If you've already been denied and were told to "go see someone for a letter", you're playing with a ticking time bomb. Denials have to be handled in an expedient manner. You're ON-THE-CLOCK here! Be frank on the phone when you call his office and have your paperwork in your hand when you do.
Your lifetime 2A rights are on the line, and you really can't put a price tag on THAT!
Pirelli literally WROTE THE BOOK on this type of EVAL!
Good luck on getting this taken care of!
When you can spare some time, take a glance at what the Coalition of New Jersey Firearm Owners is all about:
https://www.cnjfo.com
https://www.cnjfo.com/News
https://www.cnjfo.com/join-us
https://www.Facebook.com/cnjfo
Sincerely,
Dave "Rosey" Rosenthal, VP
Coalition of New Jersey Firearm Owners (CNJFO)
P.S.: We were a vendor at the same NJSAFECON event in Princeton, NJ.