On Jul 17, 11:23*am, son_of_flubber wrote:

...The wierd thing is that the play is only right-left, the elevator
control linkage has no play. *If the cause is an elongation of a
hole, I wonder why the wear is in only one axis.

If you look at how the mechanism works, you'll see that it is not
weird at all. The torque tube decouples pitch and roll inputs so their
levels of free play can be completely different. Pitch inputs move a
short push-pull tube which actuates a walking beam connected to the
two elevator cables. Roll inputs rotate the torque tube under the
seat, which moves a vertical push-pull tube behind the spar; that push-
pull tube actuates a bellcrank that connects to the aileron push-pull
tubes in each wing.

Thanks, Bob K.