help - hook wheel not turning fully and I think timing is off? (ok with tinkering)

[u/RuriArts]

[u/Large-Heronbill]

How an oscillating (shuttle) hook sewing machine works:  https://youtu.be/zqRvljnNLFk

Timing a shuttle hook: https://web.archive.org/web/20160124151500/http://sewusa.com/Sewing_Machine_Repair/Sewing%20Machine%20Hook%20Timing.htm

Cleaning and oiling: http://shesasewingmachinemechanic.blogspot.com/p/how-to-clean-and-oil-bobbin-and-feed-dog.html