BX 23 Hydraulic Leak in Backhoe

[buzzie8]

Do they make a seal kit for a BX23 back hoe control valve? This is the part where all the back hoe controls attach to the hydraulic hoses. It looks like a manifold. The fluid is leaking out of the top where one of the valve stems comes up and attaches to the controller.

The valve is made by Nabco.

Any other repair ideas welcomed.
Thanks in advance.
Buzzie