Thanks. @Wizcrafts I was kinda figuring it was a hit & miss type thing.
If a person was to install the spare shuttle hook assembly & the machine dont sew correctly, then there is probably a good chance it will be re-timed.
If I install the spare shuttle hook assembly & it sews good, what would be things to do to make sure? Should I try forward stitching, then reverse & back stitch.
Thanks for the help. I appreciate it.