After using a Treg coupling on our AS for the last 16 years, we finally changed it to a DO35. The Treg was great, except when trying to line up the pins on uneven ground.

Unfortunately the new coupling had a different hole pattern so couldn't be bolt off, bolt on. Also the handbrake is now attached to the hitch rather than separate.

In order to change the coupling, we had the old holes welded up, the mounting plate for the handbrake cut out, and new holes drilled.

Old Treg Hitch

New DO-35