Rocketarium Hydra Sandhawk Build Part 4, Booster Engine Mount

The instructions have you apply a line of glue inside the booster tube, then slide the engine block into place using an engine casing.
I prefer to dry slide it into position and tape the casing in the end at the 1/8" mark.

The engine block is filleted from the top using the end of a rounded dowel. Let dry before the next step.

Before punching the engine hook slot, poke just the tip of the blade so you are sure you are right under the glued in engine block.

The engine hook ends were sharp and cut at an angle.
The ends were cleaned up with a metal file.

Instead of gluing the ring right above the engine hook, I notched the upper ring so it fit over the engine hook.
This moved the upper ring to a slightly lower position. The upper end of the hook is now locked under the centering ring.