Plastic Washer on Mirage 180 Spine-How loose?

Hi all,

I’ve noticed that the plastic washer on my Mirage 180 Drive spine is very loose and just kind of flapping around on the spine. I can’t see that it would give any protection to the bearings (sand, dirt, etc) as it doesn’t sit firmly in the end bracket. I’ve taken the spine apart completely and there’s no grease or lubricant of any kind in the bearings.

Is this normal? Or do I need to replace the spine assembly? I’ve owned it for the last three years and haven’t noticed the loose washer before.

Your advice would be greatly appreciated!