hmm.. should only be the 2 screws on the steering plate, not the steering posts (either top or bottom).

I would remove the steering links from the steering plate. check that movement. the steering plate and posts should move back and forth with ease.. like flopping in the wind.

it that is not the case, then there is something binding with the steering plate or posts. start with the steering plate first, remove that and check for binding.

if the steering plate/posts DO move freely after removing the links, then its something with the hubs on either end.

just starting checking things piece by piece. this is one reason, why I checked and rechecked every 2 pieces of anything I put together on the car.

good luck.