Yes he is hungry. I just re-read your thread. If you are talking pinky and fuzzy mice they are too small. He should most likely be eating rat pups at this stage. The prey's width should be the same size or slightly larger than the widest part of the animal's body. Those gauges you have, if they are the sick on type are probably crap, and there may be other things wrong here too as well, but I don't want to spend time slamming your setup because it always come across as rude and that is not my intention. Please read the sticky threads on husbandry and the ball python care sheet. You absolutely need a thermostat. Just having a thermometer, accurate or not, is not sufficient. Any type of heat source unregulated is a disaster waiting to happen with a ball python.