Steering gear box?

Hello,

Might be as simple as it might still have air in it. I would keep bleeding it with the wheels off the ground.

Is the pump cavitating at all? Do you see any air bubbles?

Maybe lifting the back end and putting the rear axle on some jack stands and making it level will help move the air out.

Also, it is possible the gasket you replaced is junk or a different one is causing an issue.

I'm going to attach a picture. Tell me which gasket you replaced by referring to the number in the picture so I can get a better idea of what is going on.

Let me know if you have trouble seeing it. It is kind of a weird size picture.

Thank you,
Brendon