We just cut mine off and welded up a Curt receiver tube in. We then used some steel plate to box it all in. Makes it so nice. I can remove the tougue completely or just slide it in and have a ton of room. Slide the insert in and the ball coupler is in the exact same position it was from the manufacturer.
Ended up finding that Summit had the cheapest prices on the Curt Reciever. Half the price of the "trailer" places.....