sterring wheel centering

There's master splines on the factory-type parts to keep things in the proper orientation, and markings on the coupler and steering column, as well as the MS on the column/wheel. If these were not adhered to and/or not assembled properly, or other parts thrown into the mix (aftermarket steering box, U-joint replacing the coupler, aftermarket quick ratio pitman arm, etc.) then all bets are off.
We need to know what the setup is.