My steering wheel 'play' gets rough every year when the temp drops. Moving the wheel beyond the 11:00 and 1:00 positions requires extra effort. Seems like it's more than just fluid. Ideas?

 

That implies that you're not getting enough pressure, which I think is either due to a bad pump or a needed change of PS fluid, or a bad/leaky line, but I'll assume you've checked for that already.

The temperature thing makes me think you should just change the fluid and see what happens.

 

power sterring pump is bad