drowe
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I am in the middle of a bathroom renovation. I replaced a dual sink vanity with two pedestal sinks. I cut the old PVC waste pipe that fed the two sinks in the old vanity and ran the new pipe so it came out of the wall directly behind each pedestal. After installing new sinks and testing the drain, water is flowing slow and backing up into one of the sinks and leaking out of the slip-joints. What would cause this to happen?