Haas wants to corner their market into a tight corner so no parts or diagrams are available. When they develop s twitch, you either throw big coin at the problem or get creative. I chose to get creative with several things.
the issue with the drives is they are a true hybrid that has some of the control aspects in the main control PCB, NOT in the drive itself. Exactly how I would make it though so I cannot knock Haas for that. They are making some smart business decisions but from a consumer POV, it gets irritating...