I am assuming that you are using the inner wire with the spacers, hence the comment about slightly bending the wire. Have you considered using Sullivan plastic pushrods? If you have the option, I would recommend the carbon filled version (black inner tube, white outer tube). The carbon filled version will not expand and contract (overall length) like the other versions offered. Thread in a rod and attach it to your servo. Sullivan even gives you the hardware to make the hook-ups.