-cleaned the x linear rail with WD40, wiped clean
-applied 3 in 1 oil on top of the rail and lithium in the grove
-removed and cleaned the X linear Bearing.
-3 in 1 oil on the linear bearing and wiped dry.
I had suspected when I removed the linear bearing that I either lost a ball, or messed it up in some way, so I ordered a new one and installed it "properly."
it still grinds.

EDIT: Video link: https://youtu.be/Sngk6a0vGz8
and another: https://youtu.be/yHsFsB8nYxk
Third time? https://youtu.be/lwlubu9Uu2E
EDIT: End result found here: viewtopic.php?f=7&t=3770&start=10#p27358