Tesla Motors Club

I am a new owner and, at the recommendation from Tesla dealer, had an electrician install a 50 amp circuit to my home. Yet, when I try to change setting in the car, it will only go up to 40 amps as a maximum. Further, every time I try and charge, it will be reset to 30 amps and I have to manually increase to 40 amps. So, if I don't reset, I get a maximum of approx. 22 miles/ hour for the charging; if I manually increase the limit in the car up to the maximum 40 amps, then it will go to 30 miles/ hour for charging. Two questions: Can I get it to go to 50 amps? Can I at least not have it continually reset back to 30 amps as a default? Note: At a superstation, it easily seems to adjust on its own and take whatever ridiculously high voltage and amperage is available.