nice skiing, I'd add to the above that your lean coming into 1 ball is extremely aggressive & you don't lean that hard going from 2-3 or 4-5. This is likely a product of being narrow as was already suggested to get higher on the boat, but its causing you to come into 1 too fast, unstable and downcourse, with a loose line coming around the buoy.
I would say that due to that overly aggressive lean (which looks cool btw), the boat is reacting aggressively, pulling you out of it too soon and you're riding a flat ski, bleeding speed into the buoy. Not sure if its related but you're then throwing your reaching arm out too early coming into 1 (and to a lesser extend 3&5), with little connection to the rope.
think about being high on the boat, smooth turn in on the front foot and progressive lean into the gates, keeping the handle down and close with a smooth and controlled reach into 1 and ski back to the handle on the back side of the buoy.