Another posibility, I make one extension for X-45 with aluminium, only 21 centimeters of extenrion because with more lenght i have many problems, the work of thir its very good and no problems with the return to center position.
Here is monuted in my provisional cockpit

More information "how i made" here
http://www.serafimov.com/articulos_tecnicos_palanca.htm, only one problem its in spanish, its posble in few days a english traslation.
Regards from Spain, and sorry for my english.