FEL Lifts but very slow. Lifts good weight, and holds up with weight

Had this Jinma since 95, No major problems with it which were not caused by myself. Other than the lights sometimes work, sometimes do not, seems like a bad ground.

Anyone figure this out?

Bucket lifts very slow. Can lift lots of weight. but slow. It also does not creep down with weight in it. down as well as bucket tilt is same as normal.

I don't think it is seal leakage in the Cylinders as it should bleed down if engine off and weight in bucket.  Thought I had a restriction in the valve. (It is not the Chinese valve, I replaced with a BiB Italian made valve), so I took it all apart and blew it out, also undid the line out of the valve and pretty sure enough flowed out when valve used. (fired out would be a better description).

I am not losing any fluid so no pressure bled off in that way.  No air or water in Hyd fluid reservoir.

Did not happen gradually over time, first lift after sitting for a week or 2 was slow.

Thanks.

ps. Was thinking of putting this in Implements but as most seem to come with a loader and it uses the engines hyd pump I figured I would put here.