Install customer supply the Kohler shower valve cartridge Upon arrival customer made me aware he attempted to install upstairs Kohler shower cartridge, after he did he was still getting leakage at the valve, I determined that there was a seal missing on the cartridge, we were able to find that seal. I provided the customer with upfront pricing and multiple options and he chose for me to install the cartridge correctly, we did so And now everything is functioning properly. Actually I found the pressure to the home to be roughly 95 psi, due to this being a slab house we were unable to locate pressure reducing valve or main shut off, believe to be in the wall and the customer will contact homeowners association for potential location Nick pleasants Durham,nc