Woaw, great technical modeling !
The details are very well done, congratulations Sir !
As for the plugs, Pete is right and i think it has to do with the fact you probably still have more than 0% diffuse for that material which leads to this unrealistic chrome...
You can also set the reflection options to "raytrace+spherical map" and use either the "chrome" or "fractal_reflections" images found in the LightWave Content which would be great to simulate the reflections of chrome parts.
Cheers,
Laurent aka Tartiflette
