Could this rib on the aileron be the position where the later shorter (Mk.VIII etc) aileron ended?

Because of this thread, I’ve realised that my (thankfully unfinished) Mk.III model actually has a HSS wingtip. Plus Mk.VIII ailerons… I must have had a real rush of blood to the head when doing that. The Mk.III wing appears to be simply the clipped standard wing (but the Universal one, not the earlier). Yes, the overall span of the HSS wing is greater than that of the clipped.