That's right - I'm talking about the plastic one. On my boat I had to remove the wheel and tilt assembly to get at the 4 bolts that connect the rotary unit to the helm. I also discovered that my tilt mechanism had a fair amount of play in it, so I'm not really sure if the wobble was related to the plastic washer slipping out, the play in the tilt mechanism, or a little of both. Here's another pic of the washer as well as the (new) tilt mechanism with the wheel off. All i can say is that after reinstalling the washer and replacing the tilt mechanism the wheel is solid.