Hi, pressure bar around 3 on my Worcester 28CDi RSF boiler and a there sometimes seems to be a little bit of water that leaks form the boiler when it's on, I have just bought this house so don't know any of the boilers previous history, what should the pressure be? What can I do to decrease the pressure? Also there is a grey line that tells me what the pressure is and moves on the pressure gauge, this goes up about 0.2 to 0.4 when I use hot water, there is not another line i.e. in red that tells me what the pressure should be, is this normal? Should I leave my boiler turned on 24/7? Everything else seems to be doing what it should do, The green light on the Operating switch stays green :-) The CH Temp control light and DHW demand indicator and Flame detection red lights all stay on when in use, Many Thanks