For the first time, I tried my hand at baking cupcakes in a convection oven. So frustrated! Baked at 325 degrees and seemed to work fine. Cupcakes baked through just fine and actually tasted pretty scrumptios, BUT the appearance is horrible! It appears as though the fan blew the tops of the cupcakes into "waves." Can anyone offer a way to fix this.....I'm renting kitchen space and this convection oven is my only option. And, no, the oven doesn't have a way to turn the fan off. Thanks in advance!