Canopy frame shadows

[Dornil 58]

So, I put cockpits in some of the aircraft, hid the canopy components by ShowFromCockpit=FALSE, and everything seemed fine. But! At some lighting conditions, I can still see some sort of canopy-shaped shadows on my windscreen from inside the cockpit. Is there a method to make them go away, other that shifting the entire cockpit someplace else?

 

On an unrelated note: the aircraft smoke and fire effect - what is its name and where can I find it to tweak a little?