Note. This may work with a stock X5SA Pro. but be aware I have a bunch of modifications to mine. Particularly integrated stepper/leadscrews.

Finished rebuilding the Z-axis.

• Gained 6 more mm in Z height (now 433)
• Bearings are now Misumi, and the length of bearings went from 45mm to 54mm so the bed is stiffer.
• All bed components are now inside the printer frame for easy enclosure building
• Rods, motors, and bearings can be pulled without affecting the frame, or X/Y axes.
  

Uses a bunch of M3 and M4 parts, mostly from the original bed. Some 30mm m5 bolts, and some Prusa style square nuts (Din862)