Please help. I need to replace my shower, but the pipe centres are only 135mm apart. Most thermostatic showers that I've seen have fixed pipe centres at 150mm, and those that have adjustable connections that I've seen are expensive (We only need to fit the 2 showers so that we can sell the house). Has anyone got any advice as to what shower I would be able to have. (NB if it makes any difference I have an unvented water heating system).