I had been asking on here months back about getting a BullPull style hitch for a grain cart with a round weigh bar on the tongue.  I did locate one that was previously used by Unverferth, made by Scale Tech I believe.  They had stopped using these and I can see why, they aren't heavy enough and would not allow proper oscillation.

https://talk.newagtalk.com/forums/thread-view.asp?tid=710983&posts=3#M6052734

What I eventually came up with was an adapter made by J&M to adapt the BullPull hitch as posted here:

https://talk.newagtalk.com/forums/thread-view.asp?tid=574653&DisplayType=flat&setCookie=1

The adapter was about $350 and the hitch was about $400.  I had to grind a little bit off the back side of the adapter to make it fit my weigh bar, maybe 1/8".  It makes the hitch about 6" longer.  I have about 14" of PTO shaft overlap when straight which I am told will be ok even though the manufacturer calls for 16", I guess we will find out.  Just wanted to post this for others to see.

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IMG_1025[1].JPG (131KB - 219 downloads)

IMG_1024[1].JPG (121KB - 224 downloads)