update:
Last night I removed the filter from the suction line to the pump and ran the machine a little. The jerky, jumping movement of the cylinders was reduced almost to nothing. It was a night and day difference in the performance of the hydraulics. However I did still get a bit of foaming in the oil. I am hoping that once I install the filter on the return-to-tank line the foaming will be further reduced or cured all together.
I hope to have this completed this weekend.
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