Emissive decal not lighting on certain Static mesh's

Hey everyone,
So i am working on a project and we are using a decal to add in little emissive dots across objects and I’m getting a strange issue that I cant figure out. The decal shows up where i want in unlit mode and all looks perfect but once i go into lit mode to see the emissive i can only see it glowing on some static mesh’s and not others, please help.