Arrived on site, clients upstairs bathroom shower would sometimes not allow handle to get to hot water. She had handyman come take a look and was unable to fix. Gave options for repair, client authorized. Tried taking handle apart, and found temperature limit dial to be stripped, not staying in grooves, sometimes would work, other times would come apart and get stuck in cold position. Shut water off to home and drained system, replaced cartridge and set temperature limit hotter. Turned water back on and tested. Everything working properly. Replaced handle and trim. 2 year warranty parts and labor.