I am trying to install the steering arm with the coupler to the manual steering rack.
The issue: the coupler only slides on about 1/4" then stops. Lock screw is fully out. No matter the rotational position, it will not slide on.
I have cleaned and greased the splines and still no joy. It almost looks like a spline mis-match after the 1/4".

Before I start using force and break something, I wanted to ask how this should fit on: with or without force?
Picture below:

steering coupler.JPG