We have an existing ice maker with a dedicated water line. I would like to add a refrigerator ice maker that is very close by to that line. Is that doable and how would you recommend doing it, i.e. what fittings etc.? The existing access point is behind the in-cabinet ice maker and has a long line that drops down into the basement where a filter hangs in it, presumably for better access, and then goes back up to the ice maker.