On my S5P 4x4, I am encountering an issue. At certain proints when the Z carriage is traveling along the X, there seems to be resistance or a “flat spot” . It causes the movement to studder and ultimately have to shut down. Often it occurs while homing, but not always. Could this be the rail bearings needing lubrication? It just feel like it gets “stuck” sometimes.
Possibly, see:
That’s what it’s like when the linear bearing blocks need lube.