That happened to me about the first of this month, avoiding a head-on in a corner.
Another crooked steering wheel
Not sure how tightening anything down is going to do anything.
It seems to be internal to the rack and pinion.
I even tried to 'force' it back the other way with a couple controlled braking turns to the other side...probably not the best idea, none the less it did not fix it.
That rack is $630 new OEM.
A few on RockAuto for much less.
Mine is dry, no leaks and still feels the same...no floaty loose steering feel or anything.