The code that you cite has to do with judgment debtor examinations; motions related to claims of exemptions are typically heard where the judgment was entered. As to the private judge issue, without knowing more about you situation, I cannot give you advice. I would suggest you contact a local attorney in your area regarding this.
Has your ex taken steps to have your wages garnished? If so, the papers which were served on your employer with copies to you explain where you are to file the claim of exemption. If not, why are you seeking a claim of exemption? What are you seeking to exempt?