Well - I've just discovered another way to stop the noise!? Altering the small valve worked fine for about 2 seconds. In the end I got so frustrated with the thing, I decided to put Blue TaK round it!? So, when it works itself a bit loose, I just alter the Blue Tak a bit and it stops the water coming through too fast, which seems to make it noisy.
I feel quite proud of myself - (until the whole thing breaks down of course,which about sums my luck up!).? Wish me luck that good old Blue Tak continues to work with no detrimental effect!
Cheers? 8)
JuJu