Make sure your room temps are consistant. Its more importatnt than most people think. If your room temps move alot your thermostat will fight and might not be able to keep up. If you need to increase the humidity in your tank you can throw a damp/wet towel on top(2/3) during shed cycles and you should get a 15-20% bump in hum. Also , dbl check your temps with a temp gun. Your warm side,cool side and snakes temps. Sometimes (believe it or not) your therm might be off. Its happened to me.