Thanks for this, there is flow in the return when the loader is being used up or down but when stationery but the spool for the loader is engaged, this is when there is no flow coming back through the return pipe to the backend. Are you saying there should be flow constantly? This is what I thought should happen same as with an excavator etc, there should be constant flow and then the valve diverts to force the flow and pump to work. On the road recently when I engaged the spool and lifted the loader it wanted to keep rising and went stiff..