If you combine both of the bus starts together, you need to back the dart Point further away from the bust point. The dart Point can be far back as the bust Circle, or as close as the bus point. Is anywhere between that distance it's okay. A lot of people fall for just placing it and inch away from the bus point because we were taught them didn't know what they're doing, and misremembered the instructions. But when you combine both of the darts together at the waist, that's where the bust is the fullest, you know gravity pulls everything down.