Hi there
Can anyone tell me is it necessary to put a larger servo horn ie a extension on to a rudder servo with a closed loop (pull pull system) to make sure the clevises on the horn are the same distance apart as the clevises that are attached to the rudder

I know if you don’t you get slack in one of the cables when the rudder operates
But the one that is pulling is controlling the surface so is it necessary to use a extension ?

Thanks
Geoff