Bob,
I agree with the post about the Mini Max. If you have not found it already google ETLB and follow the link. East Tennessee Lonesome Buzzards is a blog dedicated to the Max and you can find any answer you seek there. The company that owned the rights to the Max (JDT) has ceased operations but is to soon be resurrected as TeamMiniMaxUSA. There web site is up but not operational yet. The designs by Roger Mann can handle the weigh too.

Gary