K1 Max CFS Upgrade Kit - Extruder Motor Cover falls off during printing

I purchased the upgrade kit and CFS about a month ago and I am delighted with it.

However, the Extruder Motor Cover keeps falling off during prints (and yes I have checked that it is clipped on correctly!).

Has anyone else experienced this?

I left my cover off when I had to access to remove a filament jam and never put back on.