I use a 1/2 gallon or something pump pressure sprayer if I need to add some humidity.

Your temps are too low and too widely varying. They need to be stable and not fluctuate. 92-94 warm side, 82-84 cool side, 50-60% humidity. If you don't have a digital thermometer/hygrometer and aren't measuring at the floor level(where your snake lives!) then you NEED to get one.