Kensei
Master Fin Sharpener
Found these videos on regulator service and discovered they were really a deep dive into performing maintenance on Deep 6 Signature 1st and 2nd stages. Very detailed and really well explained. Interested in hearing opinion of others.
https://www.youtube.com/channel/UCeGj6gASE9_sRWySld2Yiug/videos
https://www.youtube.com/channel/UCeGj6gASE9_sRWySld2Yiug/videos