It sort of looks like it was printed laying flat. Having rounded corners and laying flat will do that to my stuff too. Stand it up and recline it slightly, then generate supports. That should work. But I would like to see a screenshot too.
Hey Bill. Angling parts reduces the amount of total area per layer, thereby lowering the amount of force required to separate the part from the tank between each layer. For fragile or thin parts, this separation force can be enough to deform or destroy them even when properly supported.
Check out our support page on Model Orientation for more detail and some best practices.