So I got my first leadscrew from ebay - TR8x2. It came with a brass nut that seems very loose to me.
If I hold the screw vertically it will spin down the shaft under it's own weight, but it makes a horrible chattering/ringing sound, and if I move it with my fingers it seems to have at least 0.5mm lateral play.
Is this normal/how much of a problem will it be? It's for the Z axis, so backlash is not a concern.