In my IPC for my 170A, fig.26 item 14,the control column lower bearing is listed as a Fafnir KS4. Upon inspection, I have found a KP4 in its place, which is radial only, and connects the elevator control tube to the fwd bellcrank, and has a AR4-1 , which is also radial only, not pivoting. The question is whether the IPC is incorrect, or if the item was superseded, and not shown in my IPC. Any help greatly appreciated.

Rick