I have a customized Z750B with the front fork of a Z750GP/Z750E, four cylinders, 1982.
There is a special kind of “balancer” used regarding the air pressurising system.
Upper legs of the front fork have holes (right above lower stem), tube connected “cover rings” with inner 36mm diameter O-rings and a single air inlet valve is used at right fork leg.
Please post some pictures of your bike / front fork here to give best advice.
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