My Model S is consistently giving me the error message of "charge cable Unlatched", after the first 2 uses (which were fine). It continues to allow charging, but only at a lower rate of 16 Amps, instead of the normal 40 Amps (I have a NEMA 14-50). I checked all of the connections (wall, adaptor to cable, & cable to car) multiple times, and they were fine. Once or twice I was able to get it to go back to the 40 Amp rate after many tries. Anyone else experienced this problem? Any suggestions? Thanks! P85, blue w/ gray interior and carbon trim, 21" wheels, tech & audio. Delivered 3/24 at factory.