If you decide to go with the pull-pull (a very positive type of control ), remember 2 things:

1. The hole on the control horn needs to be on the hinge line.

2. You need to have the same distance on the servo arm AND on the control horns on the rudder (or other control surfaces you have pull-pull on ). For instance, if the distance between the left and right control horns on the rudder is 2", the holes in the servo arm need to be 2" also.