Or should I say the piece behind the steering wheel.

I took the steering wheel off, then the nut that is under the center cap of the steering wheel.
How do I get the other piece off? I don't know what it is called, but the steering wheel screws on to it and after removing the nut that is under the center cap of the steering wheel, it appears that it should just slide off, but I can' budge it.

My boat is a 2001 Cobra 180 with a Merc. 150 HP XR6


Can anyone help me out with this?


Thanks.