There is something I've just noticed that could use a little improvement....depending on how detailed you want to be. The crosshead screws should be recessed more. That is, sunk into the casing a little bit deeper. I would boolean spheres to make depressions in the casing and then lower the screws into them .......it's the little things that make the diff.

Available on Amazon for the Kindle E-Reader

All the Woes of a World by Jonathan Icknield aka The Bryster

And in my final hours - I would cling rather to the tattooed hand of kindness - than the unblemished hand of hate...