I'm making a mod for myself that raises all weapon zoom FOVs to 90 so there's no zooming while using ironsights. It works perfectly, except for one major issue: I can't zoom in with a scope. The solution for weapons such as the sniper rifle is to just leave the fov alone, it doesn't matter, but for weapons with detachable scopes, I have to choose between no zoom at all, or zooming while scoped and ironsighted. Is there a setting to change the weapon's fov based on mods attached? I play at fov of 90 by the way.
Without a scope: http://imgur.com/EkUiDFp
With a scope: http://imgur.com/IA6CH9z

I also wanted to know if it's possible to use the world model for 1st person so there's no clipping issues as seen in the first image