8 bit textures?

Habu gave me permission to repaint his Lakenheath Strike Eagle but I'm having some issues. It looks fine in my paint program but I can't get it to show properly back in the game.
The A-10's that I've reskinned are fine when I use DXTbmp to bring them back but this doesn't work for the 8bit textures. Is there a "how to" on this format?
I just emailed Habu but I know he is very busy with this recent project and this forum is very helpful.
Appreciate any direction or advice, I found some awesome decals to use and can't wait to get some real strike eagles in US units ;)
The A-10's that I've reskinned are fine when I use DXTbmp to bring them back but this doesn't work for the 8bit textures. Is there a "how to" on this format?
I just emailed Habu but I know he is very busy with this recent project and this forum is very helpful.
Appreciate any direction or advice, I found some awesome decals to use and can't wait to get some real strike eagles in US units ;)