RE: Aileron linkage
Notice in the pic that Mr COX posted the large radius running from the spar to the TE this will help keep the movement friction free.
One requirement of running a cable in a sheath is to ensure that both ends of the sheath are fully secured. When using small diameter cable such as .032 (1/32"), I also tin the cable from the point where it exits the covering to where it attaches to the servo or control horn. If not, it's small enough to flex - tinning makes it feel like solid wire.