I have noticed that the hydraulics on my Hitachi ex50 urg is a bit slow. It could be that I am getting so comfortable on this machine that it is only me... but my question is what would cause the machine to gradually become slow? If digging hard (eg. Pulling stumps or dislodging larger rocks) the engine will still load up but I find it slow to react. As part of regular maintenance I have changed both hydraulic filters with in the last 100 hours. The fluid is in the full zone and appears clean and has no burnt smell. Any ideas would be very helpful, thanks.
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