Are you using an Under Tank Heater (UTH)? If so, do you have it connected through a thermostat, a rheostat or a dimmer switch? If you have an unregulated UTH on the hot side, your temps are most likely too high. Those ZooMed under tank heaters that most pet stores will sell you with a new snake will get up to 120 degrees or so if they're not regulated. And if you are measuring temps with an analog thermometer, you're probably measuring air temps above the substrate rather than the surface itself, which is what the snake will feel. Check out the Accu-rite weather station from Walmart. As said before, it's about $12 and has a probe to measure the hot side temp, a sensor on the unit to measure cool side temp, and measures humidity. And if you do have an unregulated UTH, I'd recommend at least a lamp dimmer switch (another $8 or so) to lower the power to it.