SEI ST-300: Service, Cueing Repair

Note: This video was originally hit with a copyright strike so the audio test at the end will sound a little funny due to RUclips's audio masking to reverse the offense.
Very little information on this brand online. Looks to be a CEC unit which is a very good thing. Nicely built, good arm and pretty sharp looking.
Here is the link for motor service:
• Taya LP-100: Full Service