[Nick M3]

Literally put a hose clamp around the column where the plastic bearing goes in and tighten it down. Try this first before you do anything. It might work on its own. I believe that you should have the green bearing, but it might be plastic.

Shield adjustment involves tweaking the position to get the cutoff in focus and the color right. If they are adjusted to TRS spec, they will have a bunch of blue glare at the cutoff line.