The issue with the Airfix Mary Rose kit is that they have molded the netting that is over the upper decks as solid plastic.
So I am using plastic card to make the upper decks now they will be visible, also scribing planks into the card.
Dry fit the decks.
The plastic posts are spacers and offer extra support for the new deck, 5.5 mm which I hope is correct.
Dry fit of both sides and decks.
Looking good, I'll probably need some filler for some gaps.