I personally would avoid anything with straight or nearly straight lines front to back. Too easy with wet/slippery feet to have your foot slip when turning around (kids, items in back, etc).
They could have just replaced the gas door with the electric door thus putting the charger connection where it should have been so we could back into the charger stalls.
The brake coach only gives you a grade when you come to a full (or almost full) stop. If you applied friction brakes the drove some more then came to a slow controlled stop it will show 100%. My guess is you are using more regen to slow down now and not realizing you were using friction brakes...
Is your FCSP derated? I thought it could supply ~19kW. How big are your inverters for the panels? I have a 27 panel system but the inverter maxes out at 5kW so there are times that I am actually producing more power than the system can send back to the panel. As previous stated check your...