Glow effect nearly invisible/drawing order issue?

hi folks,
i have a problem. when i use the pixelshader glow effect, the effect is only visible at the borders of an object.
it seems, that the engine overdraws it.

have look at the shots. i have 2 meshes, the spacecraft itself and the parts to glow which is 1 mesh(thin red lines). both use different textures and different shaders.


new Material(human_ship_hull)
{
baseTex[0] = "~/data/shapes/droid/base.humanship";
bumpTex[0] = "~/data/shapes/droid/humanship.bump";

pixelSpecular[0] = true;
specular[0] = "0.8 0.8 0.8 1.0";
specularPower[0] = 50.0;
cubemap[0] = reflection_metal;
};

new Material(human_ship_hull_glow)
{
baseTex[0] = "~/data/shapes/droid/ahumanship.glow";

glow[0] = true;
emissive[0] = true;
//pixelSpecular[0] = true;
//specular[0] = "0.8 0.8 0.8 1.0";
//specularPower[0] = 50.0;

};


so. whats the point here, how can i get it working as i faked it in the 3rd shot.

greetings