I have a question about shipped eggs. Mine are in the incubator in egg cartons with bottoms cut out for air flow, I read that you need to "tilt" the eggs, instead of rolling, at a 45 degree angle. How do you do that? I tilted all mine one direction last night and the other this morning but I know its not a 45....Just wondering if it makes that much of a difference or if I should put them in something else (and what) to achieve this angle?