FSX:SE prop disk problem

I have a FS9 prop aircraft that I want to use in FSX as a AI aircraft. How do I change the prop disk bmp so it will be clear ( not a black disk) I know it can be done, I just do not remember how. :(
Thanks for any suggestions.
Fred Z
Old Guy!


Resource contributor
Check the alpha channel of the blurred prop texture. If possible, make it darker until the prop disk is the proper transparency. If it is fully black and the prop is still too opaque, I don't know what you can do.
Tom, that worked great! I keep learning stuff about this crazy FS occupation.;) Now I just have a light lime green glow to parts of this white airplane. Always something. Thanks again for the help.
Fred Z.
still an Old Guy