Seastar helm

I posted in the spring about the noise I am having with my helm unit. I have just gotten around to looking at it. I have a clicking noise when I turn the wheel. I have no steering isues at all(other than the noise) I bled it this past weekend and it seemed to be a little bit better. From what I have read is the valve in the back of the helm could be sticking,it seems to be they are having other problems also. Is this the pistons in the pump the are making the noise? Should I try cleaning the valves or replace the helm unit? Thanks for any help:thumbsup:

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Seastar helm