So I went to my local BMW dealership and told them about the problem and the service bulletin about you, topmar, that you had it done for free. He seemed not to know about the service bulletin and told me that we can try asking BMW if they want to do a goodwill repair... Now the problem is that the car must have a full service record by authorized BMW service which is not what our car has as we do the service ourself. So yeah, time to find money for the whole repair I guess...