I picked up my MS last week at the Fremont factory. During my demo it was mention that some Tesla HPWC "may not work" with my MS because I did not opt for Dual Chargers. They were implying that the 80amp configuration was too much for the on board charger so it wouldn't work. I responded with wont the charger just accept 40amp and charge at a slower rate than the HPWC is capable. They responded back with "It may not charge at all." I find it hard to believe this statement. Has anyone ran into a Tesla HPWC that does not work with their single charger MS?