[slider2828]

Yes check all your hardlines, also replace your PS fluid if not done so.... The pump might be going out and maybe adjust your rack. Its that big hex thing with a 10 mm nub on it. Turn the nub in while keeping the heck still or other way to make the wheel turn back and looser.

So loosen the heck nut first and turn away! O 1/4 turn at a time and then test.... Its a sensitive adjustment.