A clogged toilet. A slow-draining sink. Not a problem, right? You take pride in being able to repair these minor issues yourself with just a couple simple tools and few minutes. But what about other plumbing problems in your home? Unless you are a plumbing expert, there are times when you really need to pick up the phone and call someone who is a professional. Occasionally a simple plumbing problem leads to a complicated and expensive repair job if your attempt at DIY makes it worse.