Could anyone tell me what type of cistern lever I need for my toilet. I want to change the existing gold coloured one to chrome, so far I have bought two different sorts, one a ceramic type and one plain and simple chrome one from Wickes. Both when fitted prevent the toilet seat from staying up when lifted. Do I need a special type or am I doing something wrong when I'm fitting them. It is a low level cistern although I have no idea what make, how can I find this out. Please help. thanks in advance