Hi all,
I too screwed up my ball screw ( now that's a tongue twister haha ) by taking the nut off the screw. I know there are quite a few tutorials showing how to repair a ball screw with external circulation, but not many on how to repair ball screws with internal circulation. I found this helpful video on youtube, it basically helped me fix my ball screw with internal circulation.
Here is the link:
Repacking Linearmotionbearings Ballscrews - YouTube
Just so you know, I read that if you have found around 90% of the balls that came with the ball screw, it should still work if you fix it. I fixed mine and I didn't have all the ball bearings.
Please show support by liking his video if you choose to.
I hope this helps you out.