Having trouble with edge wear generators not applying to certain edges on my mesh.

Hello, 

I am using a metal edge wear generator mask inverted to add some edge wear to this turrets paint. However for some reason the edge wear generator is not applying to certain edges of my model. I have highlighted what I mean in the image below, checkmarks are where it is applying, x's are where it isnt but should be? It will even apply to one side of the turret but not the other, despite the fact that it is a completely symmetrical model. I have attached an image of the specific layer set up. I would appreciate any help! Not at all sure what is going on. I have baked my mesh maps, so maybe there's an issue there? But I'm not sure how to fix if that is the case. 

Thank you for any help.