I would have to confirm. But I believe it was delivered to the dealer with the breather installed.
Did talk with Kirkham Motorsports today, and the are sending a kit that should sove the problem.
Apparently a fix is to disconnect the breather from the differential overflow, and connect their set to where the dff
oil cooler would be connected. I don't't have much detail yet. But they are sending pictures, instructions, all necessary parts, including hoses, plug, filter, etc.
They did say that the wing gear(?) is so close to the overflow plug, that it is difficult to prevent
oil from being flug into the overflow in this application.
If I misunderstood anything above, I will correct it when I receive the kit.