Oppps, I should have blown up the picture. Looked like a remote when I looked at it. The third line you have looked like a line to a remote needle.

That changes things. The bubbles in the line have to be coming from the tank then. Sorry about that.

Make sure your tank is not jammed in the fuse too hard with foam. If it is mounted too solid, it will produce the bubbles you are seeing. I have a friend that had too much foam around it and it was too tight. That was the same as not having any foam. Huge bubble problem. Check that out.