Welcome! I'll assume you're in MD if you're using Martin's. Sigy's Service Center is in Rockville. Here's a link to the chapter sponsors:
https://www.nccbmwcca.org/chapter-sponsors/

We don't get a lot of traffic at this forum, unfortunately. You might try sending a message via the chapter Facebook page - perhaps someone can recommend other options for you. https://www.facebook.com/NCCBMWCCA/

Good luck!