New Way Nike Ajax Build, Part 4, Engine Mount

Here's all the parts for the engine mount,

A standard 20/55 mount.

Check the centering rings. This is the same ring, flipped over. 

Pick the cleanest side to be the low ring, the one you can see from the bottom view of the rocket.

On the left side - 

The retainer ring is centered between the two centering rings.

In the right side picture - 

TIP: I've set the upper ring a bit lower than suggested in the instructions. The ring is glued on just over the upper bend of the engine hook. This makes for a stronger mount.

The finished mount -

There is an engine block set glued above the upper bend of the engine hook.