How To - Servo 360 Mod

I get a lot of question as to how i did the servo mod for my rc rover. That is involving modifying a normal 9g servo to be able to turn freely on both direction.
I got the tips from a youtube channel rctestflight which happens to be the same person i got the idea to build the rc rover. The build is really cool (you can ask my son) and the modification needed is simple. Anyone with a spare servo and couple of old broken one could easily make it.