first off I would be weary of those analogue thermometers and hydrometers they tend to be inaccurate. second how are you regulating the UTH? They can get too hot unless they are regulated by a dimmer or thermostat. The temperatures that you need to be worried about when it comes to the UTH is the surface temperature of the tank/substrate and not the ambient. I keep my ambients at 78 but have a hot side that sits between 88 and 92 and a cool side that is between 78 and 82. thats all you really need for your ball python to be happy