Greetings all! My daughter has a home built in 1952 located in Santa Barbara county, CA. The previous owners have been in the walls and I can see romex and new 3-slot receptacles but no grounds were ever added. The panel is only 6 breakers. I've heard I can add GFCI's to the circuits but finding the first one in the circuit is the trick. Since it's only 6 breakers would I be better off replacing the all the breakers with GFCI ones? Thanks much!