Hi -- We have an American Standard bathtub (about 6 years old) with a "push button" drain stopper. We also have a clogged drain. The problem is that I can't figure out how to remove the push button mechanism from the drain so that I can run a hand auger down there. I've gotten as far as being able to unscrew the pushbutton, but that leaves me with the whole mechanism underneath and I cannot see how to get it out. Can you help? Thank you! Beth