New member. Building D8

[Fired up]

Here's a pic of hydraulics in tractor. Now it doesn't seen to arc when it's installed only when I have it out side tractor.

I have a new problem. Hmmm. Anyone getting annoyed with me yet. For some resin one of my valves is only working for one direction. When I first hooked it up it worked but after using it a little bit it stopped. I first though that a line may have been plugged or the piston I have taken everything apart and there is no plugs. I even took valve all apart to check it and it's not plugged. I thought that I might have valve together wrong and it's not the case. I am stumped. Could a crack in the valve cause something like this. Has anyone had issues like this? Help please.

Thanks patrick