We bought one of these plows and hauled it home behind the pickup truck. Granted, we were only doing 15-20 mph, and got out and greased the wheels every few miles, it seemed to trail fairly well. Are any of the hitch points loose or worn?

I'd try the Floyd County Museum for a manual. You can get their contact info a <!-- w --><a class="postlink" href="http://www.olivertractormanuals.org">www.olivertractormanuals.org</a><!-- w -->