I am going to be finishing the shower wall over a new Moentrol transfer valve (3320)
This obviously requires penetrations for the two control levers, but it also has three of what appear to be adjustment screws on the face.
The instructions say that the penetration should be shaped to expose these screws, but that will likely impact my ability to waterproof the opening.
Why do these need to be exposed? Can I cover them with membrane?