Hello , the system is made by Lippert Components. Look up on the net for their phone number. They were very helpful to me when I bent up the 2 landing pads on my rear jacks by lowering them down on the edge of a concrete stop block at campsite. If you can’t find the info, let me know.
I believe their web address is www.LCI1.com
P.S. I received the gearboxes yesterday. Thanks
I will send a check out tomorrow to cover your shipping cost.