You do not make the change at the splines ..See Jim Y's posting.... along with the fact that offsetting steering wheel from the steering column also effects the directional cancelling tabs location.
The proper adjustment is tie rod geometric location in relation to the pitman arm angle.. that's it !!

One does not move the SW to be in relation to the front end alignment...rather, one makes the adjustments to the front end to be in proper relation to a pre-centered SW.
The SW is centered FIRST, not LAST...b/c it is a driver control.. and the driver controls the car , not the car controls the driver.

of couse , this does not apply to the kids Go Cart.... you can play with the SW on that one ...