I started charging when I got home from work today at 238/40A. I always wait to see it ramp up before walking away, and it was definitely 40A. Just now I noticed the MS is charging at 32A (indicates 236V 32/32). I have power monitoring in place, and sure enough I can see the MS charged at 40A for about 60 minutes, and then dropped down to 32A by itself. What would cause this? Voltage sag, so the MS dropped the amperage to get the voltage back up? Heat? The car is the garage and it was a hot day. Anyone know?