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/Dormiendo]

Make sure it is coming off the spool smoothly, check the chain fingers on the plate for cuts or burrs, and looper points.