Can someone help me with a Honda steering issue?

I have a 2007 honda accord exl v6 4 door sedan. I'm having problems with my steering. I replaced my rack and pinion, power steering pump, serpentine belt, power steering fluid, and I got a 4 wheel alignment with balancing. My steering is still tight. Once the engine heats up after a couple mins steering... show more I have a 2007 honda accord exl v6 4 door sedan. I'm having problems with my steering.

I replaced my rack and pinion, power steering pump, serpentine belt, power steering fluid, and I got a 4 wheel alignment with balancing.

My steering is still tight. Once the engine heats up after a couple mins steering tightens back up. I'm not sure what the issue is. I just want someone to pinpoint it for me.
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