You have a round bar hitch. The bars should be parallel to the frame after the chains are drawn up. That means they will be pointing down before you lift up on the chains. That adjustment is usually 5 links under tension with a 6 inch frame. You then adjust the weight distribution by changing the tilt on the hitch head.
The reason behind having the round bars parallel to the A frame is so the chains will move same amount forward or backward when turning and so the ends of the bars do not crash into the frame. If the bars are not parallel, you run the risk of the chains banging into the snap up brackets and either bending them, breaking them, or moving the brackets on the A frame. This is also the reason for the 5 links under tension minimum and having the chains vertical after drawing them up tight.
The "parallel to the A frame" requirement does not apply to the trunnion style bars as they are designed to slant downward, both before being drawn up and also a bit afterwards.
Barney