Tim, it's just occurred to me that if you plan to use a flat panel to fill the space (as per instructions) you will still need a small lip to attach it to.
Not a disaster if you've already cut to much out – you could glue plastic tabs under the edge of the deck to support the panel.
You may also notice from the photo that I've cut the superstructure up to the edge and not left the recommended flange. On my kit it didn't fit very well and I didn't like the look. Fits much better like this, held down with small magnets inside the superstructure and matching ones under the deck.
Edited By Sinking Feeling on 02/02/2023 17:55:45