Since you don't want to use solder clevises then Dr1Driver is completely right, Z-bends are the best way to make the connections because the simply can't come lose from the servo arm. While L-bends are ok, they can still cause you problems. The keepers on an L-bend can still pop off and then the control rod can come out. Some people get lazy about doing the z-bends because they are "too hard" to do, but if you take a few minutes practicing on a scrap piece of rod you will be bending them like a pro.

Hope this helps.

Ken