Hi .I have an old 2002 Avantgarde 400 Rl MH , and when I use the mixer tap there is a leak somewhere which I can see the water dripping down outside ,I have looked inside the vents outside but cannot gain access to the taps that way ,and cannot remove sink as it is flanged under the worktop ,it is looking like the fridge needs to be removed? has anyone come across this problem before that has any advice on this please