I have a hollow wooden door on my bathroom. The brass handle came loose on this over a period of time and eventually came off. I screwed this back using raw plugs specifically for hollow doors but after a couple of weeks this has now come very loose again. I'm not sure what I can do now as I don't want to replace the door and the door furniture matches that of all of the other doors in the house so I don't want to replace that either. Any ideas? I've noticed other handles in my house becoming loose as well but obviously the bathroom handle went first as this was the one used the most.