If memory serves me there are tubes to run the wires thru from the tail forward & then you cross them over for the proper geometry for the pull-pull to work correctly. Referr to your directions, they spell it out very well.

As for the other method using the the cut-outs in the fuse. I am currently doing another ARF of the 60-90 size Dragon Lady which also gives you the choice of rear mounted servos & short pushrods. I chose to use them for this model for two reasons. 1) I'm using a good size engine & a smoke system so I put the servos in the back to help when it comes time to balance it. 2) It not a 3D type bird but more of a low-wing tail dragger #2 type plane. I haven't finished it yet, but I do have all the control surfaces in & the dual rates set. The push-pull with the short rods seems to work very well too. I don't see any flexing of the rods while pushing. The response time will be more than fast enough for me.