I am going to look at a toilet that is constantly running into the bowl , not sure of the make as I havent been yet , but it is a 5 yr old twin flush toilet with the button to flush it attached through the cistern lid to the syphon , If I have to replace the syphon where is the best place to get one from as it will be specific to the make of toilet???? Cheers Guys. ps what was wrong with the old universal syphon !!!!!!!