Bill; The extra framing member that the tank support is welded to gets in the way of the tensioning nuts - at least on mine. I had to add spacers to get the nuts away from that frame to be able to use the Anderson. picture 5 of 5 shows it spaced out.
https://www.trailmanorowners.com/for...anderson+hitch
Also i think the Anderson preserves the swing hitch. While other WD hitches put pressure up or down, the Anderson compresses the joint as the chains are tightened horizontally.
Also, those that need to shorten the chains may want to consult with Anderson first - i think you can remove only 2 links w/o effecting performance.