Called out for issues with shower. Upon arrival, found shower in kids bathroom had upside down cartridge. Turned off water and removed old cartridge. Replaced with new delta cartridge in the correct orientation. Restored water and checked for leaks. No leaks were found. Customer also had issue with Roman tub faucet not getting hot. Found mixing valve underneath lavatory in master bathroom. Adjusted mixing valve to get customer hot water. Water is coming out hot. Verified temperature settings with customer.