It's normal for the Bassinet to be slightly tilted on the Rocker when docked parallel to the legs on the Rocker. This is because the hub of the Bassinet is slightly off-center in order to dock properly onto the Stroller Base. You can do two things to level the Bassinet on the Rocker. First, you can engage the anti-rock tabs on the Rocker Base legs, which should help keep the Bassinet more level. Second, you can rotate the Bassinet so it's docked perpendicular to the legs on the Rocker (side-to-side rocking). This perpendicular position is a proper docking position.