Welcome to the zoo David! And don't worry, because if something doesn't match up with what people are saying about it, the zookeepers can use their own checks to find out why.
Very early on, nearly 2 years ago I should think, zookeeperKate did an Object of the Day of 3 beautiful, close-up galaxies which had mostly been classified as stars - because they needed zooming out on.
What your classification tells them is to adjust the image to zoom it out more for future classifiers, if that is possible.
You can change your mind during the classification process but not afterwards, sorry. Even so, don't worry if you have made a mistake, we all do now and then.