Please note the correct assembly of 217169-X7 Main Gear Hub (Strenghthened Upgrade) should be as below :
The 3 dowel pin type — please losen the socket set screws,
ensure the one-way structure is tighten in place. If not tighten enough,
please apply Anaerobic Adhesive, tighten it in place with socket set screws.
Timely maintenance will help you enjoy the flight.