So back in August returning from a vacation in the NH White Mountains towing my travel trailer on I90 in NY pulled over because felt like I had a tire going down. Satisfied all was ok pulled back onto I90 and all of a sudden the steering felt tight (too much resistance) only in one spot. When I tried to steer the truck it would oversteer making it impossible to stay in my lane. Pulled over shut the engine off for a minute or so and problem went away. Drove home to central IN no more issues. Week later problem came back and occurred 8 or 9 times over several weeks. Took to dealer they replaced power steering pump and reservoir after verifying frontend parts all good. Was fine for 1 month came back just as I was turning on to highway after working the evening shift. Back at dealer 5 days now. Of course can't duplicate it now. Very random. Just turned 60k on the odo. Anyone had anything similar? They have a call into Ford. Sorry this is so long.