An update to my first post. It looks like the original owner had backed into something, and the hitch may have had damage that got worse with use over time. The Buyers model hitch that Forest River installed is made exclusively for the RV industry, and is not available for consumer purchase at Buyers dealers. Forest River quoted me $327 for a replacement hitch, plus about $150 for shipping. I was unable to find any other exact fit replacement for the Ford F53 chassis.
I also checked with two hitch and welding shops, and both advised replacement rather than repair. I ended up going with a Curt 13702 class III motorhome receiver hitch from Amazon at $165 delivered. It has the same weight ratings as the original hitch, and came with all the needed hardware. It required some drilling to install, and the end result was fine. The Jeep was towed today with no problems. Thank you to everyone for your advice and suggestions.
2010 Georgetown 373
2013 Jeep Wrangler