Thanks for all the input guys, just for the record the problem started when after a rewire I was on was first fixed the plumber piped around the walls for the some of the rads and the top pipe went staight over a couple of the sockets, the plumber sceamed DDA and the previously happy client (an ex pipe strangler) sided with the plumber...cue much fingerpointing and shouting, the client seems to have developed a very selective memory as he was previously happy with the original s/o height not wanting them to be intrusive, unfortunately I have nothing in writing. Do you think it might be unproffessional to give the client a bit of a shoeing?