You DO NOT want to turn the temps up. I know everyone says to do that but think about it for a min. When the temps are up the food item spoils faster (epands) than they can digest it. This is when they regurge. Temps down a few degrees will keep it in his stomach.

Now before everyone gets wound up, think about a dead rat you didn't feed. It blows up right? Well it does that in the snake. The slower it "blows up" the more time it will have to digest it. If it "blows up" in their stomachs more than they can handle they regurge.