Custom shower new construction house. Plumber installed Delta R22000 Multi-Choice Diverter. See pic. Outlet 1 to shower-head. Outlet 2 to handheld. Outlet 3 plugged. In rough-in pic, handheld elbow is on left. The handheld, not shown, will be mounted on blocking above elbow. Shower-head, not shown, will be above the Delta rough-in valve. Delta T27897 Trim with 3 setting diverter installed. Delta cartridge RP51918 was installed. Problem is: No matter which setting, (See PDF), the diverter handle is on: 1st position, 2nd position, or 3rd position: BOTH the shower-head and handheld run water at the same time. Called Delta. New RP51918 shipped and installed. Same problem occurred again. Water running from both shower-head and handheld. Plumber and I cant figure it out. Plumber has installed a number of these. Any comments would be greatly appreciated. Thanks
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