This may seem like a silly question. When you are routing the body for pickups how do you determine the depth of the route? I’m taking on my first real bass project and am using 2 Delano Xtender HE/S pickups. I couldn’t find anything definitive to my question but saw anywhere from 12mm to 19mm. The Delano’s are 20mm in depth so 19mm sounds like it’d be way too deep.