CGRetired, yes, the cables will have to be routed around the elevator servos which are located just ahead of the horizontal stabilizer. The opening for the servo on the right side of the fuse is up high and the opening on the left side of the fuse is down low in order that they don't butt against each other. Routing the cables around these two servos could have resulted in slightly different length runs. However, I believe I can route both cables in a straight line from the servo (the servo is centered) to guides just above the floor of the plane and from there to the exits which are about 10mm above the floor. That would result in only one significant change of direction and one very slight change of direction and the cables would be virtually the same length.
Lordmerren, your sketch illustrates my point very well. No matter where that upper cable is routed, as long as it is supported at each change of direction, a given rotation of the servo wheel either direction will result in the same amount of movement at the rudder. That is assuming as Rodney says, the horns/arms/wheels/whatever are at equal distances.
This is the last piece of the puzzle. I am waiting now for the elevator servos and some Y harnesses to arrive. When these get here, I can start covering this thing. The aileron servos are mounted in the wing and the throttle and rudder servos are in the fuse. However, I can't cover the wing until the Y harnesses arrive and I get one of them in the wing and then get the elevator servos and Y harness in the fuse. And then this puppy goes up for sale. It is a 3D plane and I have no interest. I'm simply building it because it's winter and I love to build. I saw this kit on Ebay. The plane is beautiful and the price was right, so here I am.
BTW Rodney, where are you buying little bitty pulleys for these cable runs? That sounds like an interesting idea for my next build. Now that I have run across this pull-pull thing, I will probably use it on every build from here on. Everyone has one phase of a build that he hates most and I guess mine was routing push rods. This pull-pull thing certainly appeals to me more than push rods.