hi, ive just took off my old shower to fit a new 1 on... simple problem.. the pipe that comes from the cistern out the wall is as standard. on the old unit, there is a bolt that bolts down the tube into the shower so there are no leaks. on the new shower there is no bolt, so the fitting is lose, i dont understand what can be done to resolve this as the bolt off the old shower is attached to the unit