I have a bath tub with a stopper that has stopped working. The tub has been in place on a concrete floor, in a tiled bathroom for 30+ years and is probably worn out and should be replaced. The stopper is controlled by a handle on the tub overflow. The handle appears to be connected to the stopper and I have been unable to get either out of the drain. Can anyone suggest how I can get the mechanism out and then maybe I can get a replacement mechanism of some kind. Thanks!