Z access binding

I noticed my z access is starting to bind on its way down, has anyone had this happen before?
Starting to affect my piercing.

What table do you have?
You might need to adjust the bearings, it might talk about it in the manual on how to adjust them.

I had to add a few drops of oil to plastic guild that sides up and down in the back of the carriage.

I have the crossfire pro I tried to up load a video. I tried adding oil to the lazy rod ( threaded rod ) maybe I’ll try giving the rails the bearings slide on a good clean if that doesn’t work then try adjusting the bearings.