Have 10+ year old Zanussi Nexus FL-1281 which has developed a leak from the powder drawer. Any ideas on the cause of the leak and how to rectify? Just opened the drawer and found black mould growth and standing water in the smallest section (softener section). This drawer is not used as we use washing liquid / softener directly in the drum. Intend to pull apart tomorrow, but any ideas would be welcome. W/machine is part of sale of our house, so want to rectify urgently. Thanks for your help!!