Oh my. Have you checked that the wings aren't too far forward?
Hopefully this, after checking it, it is observed that the plastic on the rear edge and on the side has a fair fold of the same width that is the gap to be closed, so I deduce that it doubled when taking it out of the mold or while injecting the plastic. but solved the problem.
That's a heck of a gap !!
These holes are very large, although it has not been solved, it has not been fast, first I covered it with Vallejo plastic putty and on this when it has been very dry (two days drying), I have placed a hand of liquid plastic to unify and mark the paneled
Below are the photos of what I have done.
In this photo you can see how on the edge it is like shrunk on the edge with the size of the hole to cover .... I eliminate that plastic elevation of that edge as I did in the back that is also the hole ...
Here, in the absence of refining the gasket covered with the liquid plastic, it is out of focus before sanding and I will repeat the photo to make it look good.
Another photo that is bad, I will repeat it and put it back, the filter placed and caked to give it a sandpaper
with the time I have ahead I will continue making advances as long as they allow me
take care of yourself these fateful days, stay safe