I have had my focus electric for 3 days. Lots of new stuff to learn! I have my milage display set to the budget view where it gives met the battery image with the "blue cup" and I am supposed to keep the white line within the blue cup. My cup is really short and my white line stays above the "blue cup". The first day I drove the car I don't think the cup was so short and I had earned lots of butterflies - the past two days I end up with negative surplus. Any advice? I'm not using heat or ac.