Steering does not return to center - power steering

I do not know. I have had the car for some time and this phenomena might always have been there but now it was noted at the DMV roadworthiness inspection

Oh, ok, I see that your over there in Finland.
Didn't look under your aviator picture, when i posted a reply.
Not likely you can easily go over to a local parts store, and get parts for a old American car.