Power steering issues

Hi, I have a question. I have a 2005 Tundra limited. My steering wheel was very stiff. I had the power steering flushed and it felt a little better. So then I had the power steering pump replaced. Feels a lot better. Just a little stiff turning left more than right. Steering wheel still doesn't return to center. I have not heard any noise. It rides smooth and quiet. Do you think the next issue could be the Rack and Pinion? Steering column u joint. Or Bushings.
Thanks for any help.

 

What condition is your suspension components. What are your alignment specs? What’s the rack look like. How about the column and intermediate shaft.

 

My Mechanic said everything looked good. It's been raining here, But I'm having him come back to check all components. Just wanted an idea as to what to look at next. Just wanted an idea as to what to look at.

 

And you've checked that your power steering fluid level hasn't gone down due to a potential leaking hose?

 

Yes, thank you.

 

When my Mechanic comes by. I will have him check
Rack and Pinion
Ball joints
Tie rods
U joints
Bushings
Drive shaft
Steering column
I had already had an alignment done before I had the power steering flushed and power steering pump replaced.

Just checking to see if I should check any thing else. Never have had any trouble other than a bad driver side speed sensor (ABS) light was on. Runs great.

 

My buddy recently had the steering rack in his replaced and after the steering was very stiff and didn't return to center. He replaced the lower steering shaft and reports the steering is fixed.

https://www.rockauto.com/en/catalog/toyota,2004,tundra,4.7l+v8,1426935,steering,steering+shaft,11373

 

Thanks