are you saying your textures don't have dimentions in multiples of 2? You don't need to reskin the ships to fix that. I do this all the time with ships by redragon, who uses odd texture sizes. After I convert the ship to bridge commander, whichever ones don't work I simply resize to something close. For example, a 240x500 would be manualy changed to 256x512. I've never had any adverse results from steaching a texture like that ingame, and no re-mapping is required.