Mendel90 X-Ends Mods.

I have a probem to slice mendel90 X-ends correctly ( probably due to bug in openscad.) I modified them for easier printing. I prefer kisslicer and dislike bridges. To avoid them I made several variants.
1 As original but without Z nut problem
2 The same but Z nut is bottom placed
3 Old style M90 design

And I prefer Z-insulators http://www.thingiverse.com/thing:45454 as they extremely useful for Z-banding removing.

I did not try to print it yet.

I uploaded example STL X-idler