The ballscrews were replaced for preventive maintenance. They appear to be in good condition based on the pictures I have. I am going to meet up and take a peak at them tomorrow night. He acquired them for nothing and said I could have all six of them for $200 just to get them out of his garage. Wether or not I end up using them for this project I'll get them as long as they are in good condition.
There are two sets, mini mill, and vf2.