Im assuming their "ref. 7" is Windsock Vol 21 No 4? There are two photos of this a/c within that issue and a color profile on the back cover from which that 3D rendering you show matches/was based on apparently.
Unsure if there are new or other pics Lifelike referenced aside from that. The pics in the Windsock I am studying here I feel that Lifelike is likely more correct.
-the zig zag does not seem as large/tall as depicted in the WS color profile nor in the 3d rendering - the top points do not reach top longeron as the WS profile depicts.
-I do not see the last "zag" terminating at the lower longeron near the fuselage cross as depicted in the WS profile. You cannot see the zig-zag ending at the cross as in the LL decal as the lower wing blocks it, but you can tell that the zig zag does not continue aft of the fuse cross