Having never used the headlight washers (and hoping I never do- but it was the only way to get ZCW), I was wondering do you use the washers a lot? Seems odd that you would have the cover fall out more than once and now the two hook cover. Does the other cover fit tightly?
2011 E89 Z4 30i Crimson over Ivory (Munich delivery, redelivery at Performance Center)
2003 E46 325i Touring Oxford Green over Sand