Soggy Floor - help needed

[dmese]

I just went back and review pics of my inboard project and here's what I remember. When recoring I asked about the squares as well and did not go that route. I used Peske board (which is good IMO) and did not cut it into squares. What happened was I would get small air voids no matter how hard I tried to evenly squeeze the pieces together. Then I cut a grid pattern 3/4 the way through the material to make it shape better. If I were to do it again I would consider the grid or squares. With the squares you are more likely to get the air out and form better to the shape of your skin (like tiling). Mine had mahoganney~ strips laying over the fuel tanks for struts. It did not go back together this way! P.S. Check your tanks.