Symmons Tub & Shower Valve Repair with Trim Upgrade

[@mikev.1034]

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[@blessedbeyondmeasure-sisdeb]

first video i have seen that actually shows how to turn it on which is what I been wondering how to do… for some reason my contractor has the lever facing up instead of down and what does that bottom one do after you turned it on? thanks for any help you give