The Last Time I had a leak at the back of the G 10.5 the safety valve had blown at the back and constant water come out.It has actually happened to me again a week or so ago.I usual get the Plumer out but this time I am going to repair myself as it is out with one in with other definately not space age.The piece to look is where the water is coming out you`ll see the water when you turn it onthe rest is take off put back on NEW Parts of course.
Mr P.McLaughliun, October 2010