I used a cable machine down the clean out and cleared the obstruction causing the kitchen sinks to back up. I tested both kitchen sinks multiple times and everything is draining great at this time. While in the basement I heard water dripping from underneath the bathroom. I inspected the area and found multiple locations where water is dripping down. It appears that the water could be coming from the grout on the tile shower surround. * No warranty or guarantee on drain cleaning.