I’m attempting to install a pedestal sink in a bathroom where there used to be an existing vanity/sink. The wall pipe drain line is 1.5 inch and all the drain piping I see for pedestal sinks is 1.25 inch. How do I connect the two without doing a lot of re-piping? Can I use some kind of reducer coupling? Unfortunately I threw out the old sink and connections long ago before I knew I had this issue – so I can’t see how it was done before.