What he (cknaack) said. Those Sullivan 2-56 studs are the perfect length for geeting good thread bite in the inner rod and clevis. We're speaking of Sullivan inner rod, of course.

Anyway, I make linkages like this a lot on throttle, because the natural flexibility of this system, which makes it less than desirable for a rudder or elevator connection, provides the needed "give" for a linkage to move through the arc of a typical throttle linkage without binding.

Here's the one I just installed on a new ARF...