Quadcopter / Drone / RC Helicopter Automatic Deploying & Retracting Payload Hook by …Used zip ties in lieu of nuts/bolts to secure the legs to the gimbal guard. In addition, I used hot glue to better secure the hook bracket to the gimbal …from Google Alert – quadcopter j.mp/2STgDOavia Tommy Gerladohttp://www.tommygerlado.com/2019/01/quadcopter-drone-rc-helicopter.html