Groundhog Max Disc.

Shot in the dark here. Has anyone used the Groundhog Max disc on one of the 570’s? I had used it on my old 600 and there was a way to reinforce the hitch by running a bar back under the frame and attaching it with a bolt. This is not an option on the 570. All of the holes have something blocking them… can’t get a bolt through. And I think if I simply use a 1 and 1/4 inch to 2 inch adapter it is going to put too much pressure on the hitch due to the extra length. Hoping someone else has run into this. Thanks.