RE: pull/pull wire crossing
You can use a short length of nyrod inner as a fairlead to change the direction of cables provided the angle is not acute. Makes almost no difference to the cable drag and means you can put the cable exit wherever you like, and route it around internal structure. The cable tension in models does not have to be any more than enough to remove slack. Any more will prematurely wear pivots and cable attachment holes.
Evan, WB #12.