In the second drawing with the COA, there is two light grey outlined boxes.
1, above the helicopter
2, below the 50m on the size bar
3, just above the bridge is a line going up at 30 degrees to intersect a corner with two other lines at distance that if joined up would make another box outline.
Thanks for pointing that out. I couldn't see it on my screen, but with a fill of pink I've found the the blamages, which are now fixed
IMHO, the way the skeg is shaded makes it look very voluptuous, rather than what I assume is a fairly narrow structure.
You may have right, but I can't find good quality sources to change the shading which is kept from MCorad's original.