Subject 1: Telling the customer..
yes you did the right thing , well other then helping out a show car ricer. you pointed out a flaw and any person with half a brain would have been glad to have saved that 50 bucks and quickly forgot about that minor flaw on an injector.

Subject 2:what were these for..
440's had to be for a honduh. OEM Turbo DSM injectors are 450's.