Guitar Nerds Anonymous

How easy is it to install pickups? The pickups on my ESP have sort of sunk if that makes sense, they are no longer sitting the way they should be and I want to set them up properly again.

Shouldn't be tricky, usually just a few turns of the height adjustment screws on the side should fix it.

If it doesn't, then maybe the springs around the screws have become detached or the foam underneath has got too squashed, it depends on the mounting system. Post a pic?