Because the Typhoon H CGO3+ camera is so exposed to damage as it hangs below the craft, it is common for it to be torn loose in a crash. The slide rails typically break off, and the rubber dampers may also pull loose. This video show how to replace the gimbal slide, Yuneec part #YUNCGO3P105, which you can purchase here: Gimbal Slide-Typhoon-H-CGO3+
The video jumps past inserting the rubber dampers, which are easy to do only on one side. On the other side, use dental floss or a small rubber band around the rubber flange, then pull it through the hole.