Russel ,
You say it uses to much water, I asume you are saying that if you leave the valve open it uses to much water

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have you tried turning the valve off when you are not physicaly using the tool ?
Yes , the do tend to use more than a normal tool because of the constant flow, but used correctly they are a great tool. I suggest your theory of turning the water right down is not the answer.
the flow should be adjusted at the main valve on the line, and then fine tuned on the tool itself so you can see the flow running smoothly over the slot.
geoff
ps. Hydramaster very helpful , and will allow you a weeks trial before you purchase, well they used too
