Does anyone have any experience baking with a 8x3 inch round cake pan? I am making a cake for my Wilton cake decorating class on Saturday, and purchased this pan. I was planning on using a box cake mix(more cost effective) and I was just wondering how much I should fill up the pan as it is very deep. On the Wilton website it says for that particular pan to fill it with 5 cups of batter, but I have read on different websites that people have a lot of trouble with the center being done all the way through because of the depth of the pan. I'm wondering if I should exchange the 8x3 round for 2 8x2 rounds?