My ignition switch doesn't feel smooth, just rough to turn and seems to require more effect than it should to turn.

I thought I read somewhere that the actual electrical switch is not in the cylinder, but actuated by a rod to a switch further down the column.

Would it be okay to spray some dry lube like silicone into the cylinder to free it up?

Has anyone solved this problem by replacing the ignition cylinder? Or is there a better fix??

 

I would diagnose what the issue really is, if you have to take stuff apart to figure it out.
I know why my key turns hard, and its because the key is worn out. Im not sure it is the factory lockset though, but you can get ford to cut you a new key by the vin number as long as your vehicle isnt more then 10 years old usually, some places older.
Ive replaced a few lock cylinders on other fords and it has fixed the hard key turning, I just do not want to have to replace all the other locks in the truck. You may be able to get ford to send you a new key and lock cylinder, or if you buy a new cylinder, a locksmith can repin it to your old ford key. A few ideas you can try, just diagnose the issue a little further first.

 

Try some graphite powder, not silicone.

The actual switch IS actuated by a rod.

The really interesting thing is that the cylinder can be pulled out VERY easily. Turn the key to the "on" position. (not start), and then there's a small hole (about 1/8") in the bottom of the cowling around the steering column.

Inside there is a button, and if you press on it, the whole cylinder just slides right out. Then you can clean it all up and check it over MUCH easier. And when you're done, just turn it to run and slide it right back in.

Takes a bit to find the button the first time, but after that, it's a 10 second job.