That's typical to have two sinks that close together - as you know, they do that to save on plumbing costs by cutting down on the number of lines.. Haven't seen one with a built in cabinet back like that.. yes, that would definitely make it a tad more difficult.. Couldn't use the sawzall there.. maybe drill a hole and maybe a jig saw or plunge cut circular saw.. Glad you got it back up and running - well, not leaking..

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Friendship is like peeing your pants.. Everybody can see it, but only you can feel the warmth..