Hello We have recently bought a house and the towl rail in the bathroom was not drilled to the wall so i took it off and drilled it to wall and put the rail back all sound!! But since then iv had problems the boiler pressure is showing at 0 but everything is working fine hot water and radiators and the safety discharge pipe (pressure release valve ??????)is leaking a good cup full when the radiators are coming on!! Im assuming that this is doing its job?? Also radiators are getting extremely hot!!! The boiler was working absolutely fine until i dis the towel rail...any help plz??