The only issue I can find is incorrect use of colour 80 on a metal part.
All metal parts, like axles, screws, electric contact plates, plugs and springs, must use colour 494.
And why don't you use standard edge colour 24?
All metal parts, like axles, screws, electric contact plates, plugs and springs, must use colour 494.
And why don't you use standard edge colour 24?