black window glass

hello fellow simmers.... I have been having a problem for some time now....how do you fix the windows on the AC when they are black?
one of them is the tri-pacer by Brian Gladden
another one is the T-6 texen found here...http://www.simviation.com/fsxvintage15.htm
and another one is the simtech P-39
im not sure if it is just fs9 ac's going into fsx or also fsx ac's
normally i just delete the ac's when this happens but i want to fly these now.
thanks for all those who reply
jason 8-)
*Edit*
here are some sample pictures



one of them is the tri-pacer by Brian Gladden
another one is the T-6 texen found here...http://www.simviation.com/fsxvintage15.htm
and another one is the simtech P-39
im not sure if it is just fs9 ac's going into fsx or also fsx ac's
normally i just delete the ac's when this happens but i want to fly these now.
thanks for all those who reply
jason 8-)
*Edit*
here are some sample pictures


