Stange cross hatching/banding

[codered]

I have a question regarding adding new textures.  I use Photoshop 7.0 and DXTbmp to convert the BMPs to work with the aircraft model.  I have noticed this more with the Flight 1 Text-o-matic (perhaps I should ask this at the flight1 forum, but I will take a chancer here that someone knows).

Anyway, after creating a texture and flattening it, once I get the BMP loaded onto the plane, I will notice some yellowish cross hatching/banding on white textures in the game.  This is very noticable when zoomed in on the plane.  When I zoom in on the textures in Photoshop, I don't see the banding.  Any ideas on what may cause this?  I usually save my BMPs in RGB at 32bit.

Thanks all.