I'm remodeling my #2 bathroom, going from 2 sinks to one. When I opened the walls , I noticed that both hot water lines had extra capped ( one had a small hole in it ) lines attached . I did not attach either extra line to new single sink. Now when I turn on water to #2 bathroom , I lose hot water to whole house. Do I need to add one of the extra lines to new hot water line to sink ?