Elevons:
The following are photos of the stock servo location; the stock positions are located far back towards the trailing edge where the cord is narrow. This makes fitting a standard size servo impossible with the provided flat servo hatch cover as I wanted to use a HS 5955TG, during my search of other threads I did find a photo of a raised hatch that would allow the standard sized servo (Photo 5), you can see in photo 4 the back of the servo stick up beyond the top skin.