I removed my tub overflow cover and found an old, rusty, threaded overflow switch rod just kind of standing in the overflow pipe. I tried pulling it out, but it seems to be locked in somehow. I'd like to remove the rod so I can install a new switch (I currently don't have a switch - just a plain cover). First, will I be able to install a new switch mechanism in this old pipe. Second, how do I get the old rod out? :confused: