There seems to something wrong with my fuel gauge. Each time after filling up full tank, even at times of petrol overflow, my dial gauge seems to be registering a few bars below the full tank indicator. After a few days, the dial gauge will go up and indicate full tank. Then, will fall drastically down to a few bars the next day or after several days. Brought once to Nissan Service Center, but they claimed working as per normal (as usual). Anyone has the same problem? Thx!