I agree on keeping your eggs with the fat end of the egg up. I'm afraid these incubators do not leave much room for turning. If they can't be tilted enough you may need prop your incubator up at one side for example with a book. Then when it comes to turning them again put the book at the other side of the incubator. I'm not sure how the water wells work for this incubator so please be aware of any water spillage if you do go with the proping up of the incubator.
As for your temp, I can't say that you will have to adjust it but I would highly recommend that you get a known to be correct thermometer and place it in your incubator to see if it is running at the correct temperature. I have read that these incubators can give the wrong readings even if you have it set to the correct temp for incubation. Does it have a fan or is it still air?