Great job finding those keys,I have an identical set of cases but not branded BMW,I have often looked at the keys and thought hope I don't lose them,BTW I only lock the cases to the bike but not the cases them selves,reason?naughty people can look inside but can't pinch the cases and don't jigger the lock trying to open them,also I have rubber straps that secure the cases to the bike so they cannot fall off if you havn't locked them on properly,don't ask how I know this,cheers Nev from OZ