So many requests for information and pictures with none provided.

You are an the other side of the planet, we want pics, but we need pics.

Please take pics of:
The radio installation.
The servo installation.
The control surface connections.
Give settings for:
Elevator control throws, end points, expo, high and lo rates.
Any switches being used.
Any mixes or modes.
Any programs.

All the info you've provided so far seems to point toward something other then where you are looking.

.02