wall connector chatter

I have a 2020 Model 3, and a Gen 3 Wall Connector. I will have a 60 Amp / 240 breaker installed. 6/3 wire will be used from the breaker up and inside the wall, into the attic and over about 9 ft horizontal, down inside the wall to the location of the Wall Connector. From the electricians I spoke...

Brand New Gen 2 Silver Wall Connector with 24' cable, 80 Amp (100 Amp circuit). Still in original Unopened box. Available for pick up at a mutually agreed upon location. $485.

I have a LR RWD Model 3 that states on my display that the max charge amps are 48 A. When my electrician installed my wall connector, he put in a 40A breaker. If I leave things alone, the charger will charge at the full 40 A so I have dropped the max charge amps to 39 A to include a 1A "factor...

Our Model X 100D is fairly new - just 6 weeks or so. Our typical charging practice is to plug in the Wall Connector before we go to bed and unplug in AM when we go out. Car is set to charge to 80%. Normally, I'll plug in the cable and start the charge, and when I walk away, the car will lock...