Ah, yes. The skull thing a few days ago. I remember now.
Stick to exact canvas sizes whenever possible. 256x256, 512x512, 1024x1024, etc. Your last one was 257x257.
You also used an alpha channel which isn`t needed for the cromowheel2 file (or the grip). Use DXT1 with no alpha channel, and include the mipmaps (so you don`t lose quality, or use more gfx memory than you need to, when you view it from outside the cockpit).
The wires were ripped from the LFS models using blender. I`ve always done that for skins/textures, since it lets you see exactly where the edges lie, and any hidden bits that aren`t visible on any other templates.