These guys know their stuff at Rona. I went to the [another store] first... what a mistake. [Another store] could do nothing for me to fix my specialty collar and ring set that was leaking on my Manchesca sink. Their take was that I had to buy a whole new unit because nobody makes the odd shaped
Rona was extremely helpful, couldn't' get the unit either, but had solutions based thinking and came up with a combination of other things that made the parts fit and sealed the sink.
Never goto [another store] - they don't care..
Rona Rocks! :-)