Did you options>preferences>gunsights and make sure all planes have the one gunsight selected?
I think you can only use 256x256 BMP's, not sure about file size; is your gunsight image a 256x256 BMP?
its in 256x256 .BMP colors now, but right now if i want it to be the default sight i have to go in, select every plane and make it the gunsight. how do i get past that?
Take a gunsight you wish to use for all of them...then in your hightech folder under sights, re-name the gunsight to "default" - then they'll magically appear...