I have no experience with your m/h but if you have the motor out I would take it to the oldest independent auto parts store (not a national chain) in your area and ask if they can help identity what you need. They may also be able to direct you to someone who could rebuild it for you. Good luck.
John & Diane
2015 Windsport 27K, Sumo Solo's front, CHF front &rear, DIY rear track bar, Roadmaster rear add-on sway bar, and 5Star tune. 2014 Captiva toad and Ready Brute tow bar.