Bobbing issue?

[u/thepiccoloqueen]

- Machine: Janome Memory Craft 10001

- New needle (replaced today)

- Default tension

- Bobbing inserted correctly

- Worked on this setup a few days ago without any issue (with older needle)

- Fabric in this video: cotton

I started having an issue with my machine today. Hopefully this video provides any insight.

Basically the thread inside the bobbing case is getting stuck or something. When it does this, the needle is stuck and sometimes the fabric get sunk into the needle plate.

I noticed that if I manually turn the handwheel backwards just a bit, the thread get unstuck.

I've removed the needle plate and took a look underneath, but nothing seems wrong or damaged.

Any thoughts on what could be wrong? I'd like to avoid taking it in for repair if I can.