RE: Elevator Throw Help
You will need 1-1/2" aluminum servo arms. Contact SWB Mfg. or Air Wild for sourcing. Go to the hobby shop, or contact Nelsonhobby.com/newsite, and obtain RCL70 linkages. It includes excellent ball link assemblies that are bullet proof and work perfectly.
Tom advises not to use ball links on plastic servo arms, and I believe that his advice is well given.