Hello, my name is Heather. I hope that someone can help me. I bake chewy choco cookies all the time, however they come out flatter than a pancake. I have tried increasing the baking soda, using more cookie dough, making huge balls of dough(this just makes a huge flatter than pancake cookie) but nothing seems to work. I live in SD, is it the altitude? How can I fix this. Noone else in town seems to have this problems. They get thick cookies. Hope someone has some suggestions. Thanks