I contacted AirSafe hitch and requested that they send me replacement parts for the entire air system on the hitch. They agreed to do this.
I received a box today with the parts in it. Unfortunately, the new air bags, t-fittings, and air lines are bigger that the OEM. Also, AirSafe did not send air lines to reach between the T-fittings on the center of each tower to the Schrader valve in the center of the hitch. They did not send a new Schrader valve assembly or a T-fitting to connect the new larger air lines to.
So right now, I can replace the air bags, air lines, and T-fitting up to the center area of the towers. But the T-fittings are too large to accept the OEM air lines. Have a new email to AirSafe.
I thought that AirSafe would send everything including the Schrader valve but they did not. Waiting to see what they do next.