Hello I'm currently completing a restoration project, I've pulle dhebresr roller a paper to replace bearings amd to give the rollers a hit with ranox. Here was a heap of built up grease inside the pvc spacers, do I have to fill that back up when I'm reinstalling the rest rollers, or was that just a build up of dirty grit and grease l.

Also do I have to add and oil or grease on the new bearings throughout the mower.
Cheers.