So, these marked areas in the image are metal textures, but they are all linked to the first color channel (second color channel changes some very, very little details on Op's mask). It doesn't look normal for me. The easy solution for this is put those areas in second color channel, where almost all metal textures from others Operators accessories are.
(Primary color is white. Secondary is red, and as you can see, almost nothing in this color channel).
Thank you in advance for your attention. <3