Steering column bent? Do you mean the steering shaft? The shaft with the threads on the end for the steering wheel nut? I don't think you could bend that shaft at the very end. It's a hardened shaft. You may be still seeing a bearing problem. Unless you take out the shaft, you can't tell if bent. Are you sure you are not rushing into this? A donor column unseen and untested could have it's own problems.
What does "a slight leveling" mean?
What is wrong exactly with the column now after you replaced the whole turn signal assembly with new bearing? "Didn't fix the problem"? Are you saying it does exactly the same thing? The same noise? From the same location? Did you determine that it's not a ball stuck down inside? Take it apart, examine/fix, clean, lube, test and reinstall.
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