The TREs are supposed to be mounted under the steering arms. In your pictures the passenger is mounted from the top while your driver is correct and mounted from below. And they should fit snug in the bore with zero slop when tightened.
However the TRE has a shoulder that matches the taper ID of the steering arm, and that is orientated with the nut facing down, on both sides. So either these were tapered incorrectly (upside down) or that's the way 4X4 Labs wants them to be orientated. The only way these will fit is upside down, and still connect to the Saginaw gearbox shaft, and fit the TREs into the taper of the steering arms. Look how nice and snug the fit is in picture 2. Picture 4 shows the inexact fit, but not so well.