A press-on drain-stopper does not need to get attached to a brand new or present lever; that would be commanded with the overflow cap button. In the event you employ this type of drain-stopper, your installation will likely soon be fairly straightforward. However, you might notice that for decorative purposes, you want to replace the over-flow cap with a brand new version that fits the newest drain plug. See more: https://www.waterpebble.com/how-to-remove-a-broken-drain-stopper/