Question: shouldn't all of the bridle leg attachments points on the frame "face towards the center of the kite"?, some in the video example faced out instead, lower left corner for example.
Also, shouldn't the kite be lifted-up by the top two bridle attachment points only (where the flying lines adhere) to confirm all the legs are universally tight?
If you want less over-streer & a tighter response, you can add a second (or even a 3rd) pass of the vertical tiny loop thru the larger flying line attachment point. It forms a prussik knot this way. Less movement = less counter-hand action to stop a flight commanded rotation.
Your mileage may vary!