Sorry I've been gone from this project for so long.
Here's is my process for hooking up the pull-pull.
Gather the parts.
Determine how deep the swivel link is and then mark the threaded couplers for
1/2 of the depth.
Install on to the swivel link and install swivel link on to the rudder horn (same on the servo arm if you choose to use them there).
Run a cable up from the back of the fuse, making sure not to wrap it around formers, until you have it up front. I loop it through my servo arm as there is usually enough adjustment with just the rear couplers. Install the brass crimp on the cable. Once I have the correct length needed I pull the cable up through the servo arm hole (outer hole on the Du-Bro arm in this case) and fold it back through the brass crimp.
Then I bend the cable so the crimp can't slide back (about 1/2" to 1" behind the arm).
I loop the wire through the front of the crimp again and this essentially locks it in place.
Pull the cable tight.
Once you are happy with it all, squeeze the crimp with pliers until the crimp is flat.
Repeat for the other cable.
Once you have the servo side completed, repeat for the rudder horn side. Just remember to double check to make sure you have it set at the right length, power it up (or leave it powered on), before crimping the rudder crimps.
With the horn modification (relocating the rudder horn holes) I do NOT get full rudder throw, even with the servo end-points bumped up to 140%. ONLY do this if you don't use a lot of rudder. After I fly it I will report back if I have to change to a larger servo arm to get the last bit or rudder travel.