I have a magnetic mount in my car that i love, used it with my LG G2 until i got my pixel 2 XL. So now i want to be able to use my pixel 2 XL on the mount. But i don't want the little metal disk that's needed to attach it stuck on my nice new custom case that i plan to order or on my bare phone (and have to remove the case every time i mount it). So i was hoping to be able to embed the disk in the case somehow. So my questions are (a) in the $50 case with 2 layers, can the layers be pulled apart such that i could put the disk in between the layers? And (b) if no to (a), does it seem possible to dig out a circular area of the inner layer to insert the disk, or is the inner layer kind of fused to the outer layer?