I removed the steering wheel, pried off the plastic cover, and used the special tool to compress the lock plate. However, I can't see the retaining ring that holds the lock plate. There is a small metal piece that looks like a thimble, at the base of the threaded shaft. Is the ring under this piece? Or is it something huge, staring me in the face? Also, when I find it (with your help) how does it come off? With a pointy nose pliers? A picture would be great. Thanks!