After flying the X-5 in manual mode I came to the conclusion it didn't have enough weathercock stability so I have added a small amount of fin area above the motor mount as seen below. I also drilled a hole through the foam in that area to provide a bit more cooling air for my motor as it was running hot in the weather we've had last month.

I have also included a photo showing where the pitot probe comes out of the nose. Note that it is angle down slightly for a reason - when a wing or any other object  is generating lift there is upwash in front and downwash behind it, so a slightly downwards angle on the probe will better align it with the airflow.