yes it is typical to have the hitch and sway bar tomake noise, mine made a bunch of noise until I greased it.
Grease the ends of the weight dist. bars where they go into the pocket, and grease the inside of the pocket too, and thatmay help with some noise. Also grease the ball. You dont need much but it is helpful with the noise and wear and tear.
My hitch made all kinds of noise when I drove with it dry/no grease. Now I keep it greased and it doesnt make a sound at all.
Except don't grease the friction bar surface.
The ball ends of the bar you can grease.