RE: edge, yak, extra, cap....?
The 260 has the wing mounted in the center part of the fuse, where the others 300, 330 have the wing mounted towards the bottom of the fuse. The 260 in full scale also has a cockpit more towards the rear of the plane so the pilot clears the wing spar. The 260 is only a single seater where some of the 300's are 2 seat planes.