I'm a real plumbing numpty, but with the help of this site I've just managed to get the lid off of my Roca toilet cistern. Hooray !!! Now is there anyone out there that can advise how I might increase the flow going into the cistern as at the moment it takes forever to fill. I do know that it's not the power of the flow coming into the house as I have another cistern exactly the same which fills much more quickly. Thanks for reading this. Alan861