6040 y axis

[AndyUK]

The reason mine was hard to turn was that I'd installed it wrong.Screws too tight

That would typically indicate to me that something is misaligned if it becomes hard to turn when the screws are tight - releasing the screws just allows things to move into a more neutral position.

[magicniner]

That would typically indicate to me that something is misaligned if it becomes hard to turn when the screws are tight - releasing the screws just allows things to move into a more neutral position.

+1
If tightening screws causes an issue something is out of alignment.