I was watching Leonard's video about the wing build and I noticed something. He built 2 different type of ribs; aileron and non-aileron. The rib pattern in the drawing package I received has only the aileron type. Is there a compelling reason to make 2 different ribs or will the aileron type work full span. In the video he said something about weight, but there appears to be only a few inches difference in material usage. I curious to know how others have handled this.