[Rob Culver]

Thanks for your reply Kidkraz. No, I don't need to stick with this one if it's easy to replace. Do you know what the cost of a new one is? Do you know if i should be able to pull of that top black piece and separate it from the bottom? I tried wedging a knife in there but the two pieces, (assuming there really are two pieces) are stuck together pretty tight. On the other hand if it's not too difficult or expensive to get the new part perhaps I should not worry about damaging the existing one in removing it?