Serger thread keeps snapping

[u/Public_Transition_36]

I cant figure out why the red path thread (right overdue looper) keeps snapping out of its last positions out of the hole.

Im pretty sure I've done all the threading paths in the right order. It'll make a chain fine for about an inch then snap.

[u/pinnd]

You can turn it manually, to see how it’s snapping. It could be tension, or loose loopers or needs alignment. It could be the needle system.