I think of a signal as a problem that is smaller than the problem and eventual crisis that will evolve if the smaller problem isn't attended to. If any signal or problem is ignored it will likely get worse and more and more unignorable. I see the slow leak as a problem that is also a signal of a problem that is bigger and will get even bigger if not attended to. I think it's also meaningful that the source of the problem is behind a wall (we each have some of those). I had numbness and tingling in my fingers, which was a problem and signal of a bigger problem. I ignored the problem until it became bigger, saw that it was becoming a big pain and problem that could become a big looming crisis, so I had carpal tunnel release several weeks ago which improved my situation. What helps me start the work of tending to what has been unduly burdened is wanting to stop hurting, knowing it's probably going to get worse if not attended to, and wanting to fix the problem and be healthy again.