@Dan: thanks for the confimation of the number of the rocket launchers. I had overlooked that picture. Sadly it is not possible to check the aft row of launchers on it, but we'll assume that it is equal to the front. You will find some tips on the Shipyard deck in this post: it's quite good, but not perfect either.
So, it's down to the deck edge anti-skid plates. Therefore I have safely boxed the island structure after placing all details I could add from the kit.
One caveat is in the construction of the box antenna. Don't forget to include the internal antenna part. I did and had to pry open the box. I also camouflaged the bad fit of the rear windshield with some stategically placed pieces of Evergreen. One ladder broke down but it could be replaced with the one you're supposed to glue inside the island. I think this was done for the people who wanted to open one of the side doors, because why include detail on the inside of a closed down room? In my opinion Fujimi had to include a Pe venturi for the bridge. Also I'm planning to add some of the complicated tubing seen under the platforms.
And now, the big brass:
I soon understood that the pink Zap would have to be put aside for a few hours. I had twice tried to apply it on the front plate but that would always just attach itself a bit off. This resulted in a patch of CA to be chiseled off, taking a quarter. That brought me to a tube of Bison superglue that has comparable strength combined with a much longer curing time. It's only a bit thicker to spread and clean off the edges.
At various locations, a strip of anti-skid plating has to be shortened. I don't count this as a great issue because it will not result in any remarkable deformations. I sketched how I clipped part of the plate between the edge and the middle of the strip.
If then the edge particle is first added and the shortened strip continues, it will not give away this intrusion. This must have been apparent in any testing Shipyard would have done, though. The problem could have been dealt with by superimposing two strip ends, but this would always show up after painting.
The plate is guided in its slope by some pinchers.
The next two locations where a clipping had to happen. I hope this will not have consequences for the braking cable alignment.
And then I encountered an issue that maybe was overlooked a bit in the kit; I don't remember having read about it in the Zuikaku thread either. The ship's crane has been provided in the kit and on the Fujimi extra PE sheets, but the deck is not opened up to provide the stowage bay that these ships apparently had. It appeared that Fujimi simplified the cover for this stowage bay as a 6-part rectangular plate, originally depicted in Morskie as being somewhat angular and aligned to the crane shape, and about 10-part if you compare to Gakken (but this might be more of an artistic impression). I copuld not change that shape, but the Shipyard part has the option to be opened up. Now the crane could be built as it would have been implanted in the deck, but that means that the plastic deck had to be perforated by force.
To have at least a straight side, I used the Airwaves rounded sawblade. This is a cheap and effective way to cut out rectangular shapes, any scratchbuilder should have one.
The short sides are cleared with a drill. Fujimi did partly provide a bottom to the stowage with a plastic part.
But the part is backed by the hull edge, impossible to remove by handsawing.
A sandpaper disk takes care of this. The removed deck section is used as the bottom and the crane base is fortified with some Evergreen profile.
That concluded the deck edge plating.
As could be deducted from the plating errors I just demonstrated, the location of the middle and aft Shipyard elevators had to be reconsidered. Especially if I want to time out the placement of the wood deck parts until after priming of the photo-etch plated hull.
Also the elevator edge has to be leveled unto the deck to facilitate the PE application.
The difference accumulates to one millimeter in the aft elevator.
All elevator plating is now glued correctly, I left the elevator edges fixed to the elevator floors to keep it level. The large deck-wide plate behind the ship's crane was provided as a Fujimi extra PE part, but the Shipyard part differs in having no anti-slip texture on it. I presumed that that must have been intentional and therefore it is preferable. The front plate is partly polished by the removal of CA on a tile, magnified as this is on the picture this will not show up after painting.