Ok, guys, what about the pull-pull on the ailerons? With all the advantages of the pull pull listed in the article (ease of install, light, more flutter resistant, etc) why isnt the pull pull system used more?

I have one installed in the rudder of a 40sized 3D plane, but thats about the only time I have seen them used in a 40-90 sized plane.

Also, what about the extreme angles he has setup on the elevator install? It seems that a pull pull with a 45 degree angle in the cable would cause some unwanted friction.