@Eclsnowman I have some suggestions for the Herculien BOM you might consider. I don’t believe the M4 screws used to attach the 24V power supply are included in the BOM, it may be helpful to add those. Also, I was looking for alternative shims for the pulleys and came across these:
These are $0.23 when ordering 20 or more so it’s less than half the price of the McMaster shims for twice the quantity. Additionally, McMaster lists the ID tolerance of the shims as 10 +/-0.3mm, whereas the Misumi shims have an ID tolerance of 10 +0.10/+0.15mm so they are sure to fit on the rods listed in the BOM.