I have the original artical that Mr. Hanson did for the Tiporare. The artical states:

Elevators: 3/8" up 3/8" down
ailerons: 1/4" up 5/16" down (bias)
Rudder: 2" right 2" left

These will do well for your Curare. Keep in mind that these throw are the "maximum" control throws.