Estes Space Shuttle Columbia Build #1385, Part 4, Engine Mount & Clay Weight

The engine hook gets a soft bend to keep the ends over the top and bottom of the engine.

Don't just bend it from the middle - 

Try soft bending it from one end to the other.

The instructions say to cut a engine hook movement notch using a knife. 

I used a rotary punch for a cleaner cut.

The instructions suggest the upper ring is glued even with the upper bend of the engine hook.

I like to overlap the upper bend of the hook. It makes a stronger mount. The upper ring did get a shallow crescent punch to fit over the engine hook.

The clay weight weighs .41 oz.

ALL the weight is used, pressed into the inside tip of the nose cone.