I have been trimming and trimming and I think I am almost there.
Just a bit more on oneside of the interface with the inner skirt and I think I can glue it up. After prepping it of course.
I did it this way. Seemed like a good idea at the time and seems to be working. Beveled the edge of the plexi, will be glued along this line.
It shows a small gap which is only at the rearmost portion.