For whatever reason my CVQ knob fell apart last night. The bass is 37 years old so I guess thinks like this can be expected. I guess I need to reach out to Mica at Alembic..any other options?  What is the best way to contact Mica?  Thanks!

Plastics can become brittle over enough time. There are replacements available in our online store:
https://store.turbify.net/alembic/pointerknob.html

Thank you Mica!  Just ordered!  I appreciate the quick response!🙏✌️