I fitted a new toilet a couple of weeks ago and everything seemed fine, but it now appears to be leaking at the point were the water flows in to the cistern. Its one of this little ones with a push button flush and no ballcock. The place where its leaking is between the body of the cistern and the nylon nut which screws on to the inlet of the water level control device. I've done this up as tight as i can but there still seems to be water getting out. I'va assembled it coorectly and the washer is in place inside the cistern.
Help!
Help!