Stupid question but were you the first person there?
I live in New Jersey and have been going on call-backs from other companies and much to my dismay I have had to remove all refrigerant and TXV if applicable I am starting to really believe guys are putting the wrong refrigerants in.
I have been on two in this past week.
Sucks for the customer but when I leave the systems are running beautifully
They seem to be adding very minimal amounts but thats all it takes