I felt the default z-yokes were a bit too flexible and can place a twist on the lead screw nuts, which could affect print quality. Upgrade to these rock-hard yokes that look like they are carved from granite!
I first went overboard and generated a totally over-engineered part filling the volume, then used Fusion 360's topology optimization tool to trim the part down and provide optimum strength for the volume of plastic. I liked the look so I decided to use the mesh as-is, rather than smooth it.
There are two versions, one for the standard rubber washers, and another with a larger landing zone, which will take the washers or my kinematic bed mounting system:
Both designs are slightly thicker than the original, which helps with the stiffness. This may subtract slightly from your max z-height. If you are bothered by that, when you print them you can just sink them a few mm the surface of the bed to trim the bottom off.
I suggest printing these with plenty of perimeters and generous infill. I went for 4 perimeters and 30% triangular infill.
**The Fusion 360 generated STL's split the object into 2 meshes. This prints fine in Prusa Slicer, but in Simplify 3D, you need to go to the "Mesh" menu, and select "Separate Connected Surfaces", or it doesn't print correctly. (If any one knows how to fix this in Fusion 360, let me know.)***
The Fusion 360 archive is provided, with the topology optimization study. So remix to your heart's content.