Customer said that in master bath shower wasn’t staying hot and also that showerhead had bad pressure. Also lavatory faucet, hot side was low pressure as well. Customer quote to take apart, lavatory faucet and expect and also replace car cartridge on shower valve and clean showerhead. Customer approved. I went ahead and replaced cartridge and tested now. Shower is working as it should. Took off showerhead and cleaned and pressure is better than what it was. Cleaned buildup in supply line on cold side for lavatory and pressure is better. Cleaned up work area.