
Here's the replacement cover & spring I got from Hucky. I understand that the original covers were made of a more brittle type of plastic prone to snapping off. The new one appears to have some flex in it.

And here it's all reassembled. Even though the new cover has more flex to it, I'm still not confident I won't break it back off eventually with normal use. It seems like it's just begging to be broken with a gloved-hand as the key is being grasped & pulled up on to turn the bike off.

On an editorial note, when BMW engineers something well, they do an amazing job. But when they decide to design a component that's needlessly complicated, mechanically awkward, & flimsy, they are/were clearly skilled at that too!