Hello, Recently I tried to make a tres leches cake, this would be my second time trying to make one. However I keep running into the same problem. After the cake is done baking I turn it over and a rubbery film is at the bottom of the pan while some batter actually turned into cake but it only rose about 1/4th of an inch. The recipe I used is Ree Drummond's Food Network Recipe. I followed it as written and it didn't turn out. What am i doing wrong?