Help Needed - paint or Effects?

Hi community,Was looking for a little help if possible from somebody with more painting skills than myself.Firstly, has anybody imported the Aerosim 747 series into FSX?I did this so that I could have a 747SP with a VC, but I have hit one snag which seems to be affecting the sim.The original aircraft had dirty windows, also, as I recall in FS9, it somehow had an external effect that made it appear like you could see the slipstream passing the windscreens.Move forward to now, and when I use the aircraft in FSX:I appear have what appears to be a light grey "flashing mesh" over the windscreen. I can see through it, but it is very annoying, a distraction. Here is what I did prior to importing theaircraft into FSX:1. Made a copy of the faulty texture, and exported it to Paint Shop Pro 9 using DXTBMP as an Alpha channel.2. Modified the black areas so they were the darkest black in PSP9 (although I do not know enough about RGB values, so I cannot quote the numbers)3. Repainted these areas and then exported then back into DXTBMP as a new DXT3 Bitmap4. Dropped this into my Texture folders.I can see a little difference, but not a whole lot. After work, I will look at the Effects for this aircraft too....would it be possible for an "external effect" to do this?As usual, any advice will be greatly appreciated.Many thanks,Andrew.