There are some old You Tube videos of people upgrading this model. I remember way back in the day one of the magazines had an article where they optimized the airframe by contouring the air inlets, smoothing the interior and so on. Usually when I see that style of aileron hook up it is somebody who started flying in the 1960's and that is just the way they always did it. It's possible they thought they were improving the airflow into the fan by getting the linkage out of the airflow.