2012 Dutchman VoltageTH middle Stabilizer jacks won’t work.

Hello All, So I just bought this 2012 in Dec. 2017. All the jacks worked fine. Sometime between then and about a month ago my middle stabilizer jacks won’t come down. I know they are supposed to come down with the rear jacks when leveling. I also know their is power coming to them. I can “Trick” them into working by switching the plugs in the control panel and operating them from “Manual Control” A electrical friend of mine recommended the main control box located up front above generator may be bad. Soooo $300 later and the box switched out I still do not have middle jack control. NADA /Nothing. When the new control box was installed I had to wait and “Zero Level” it on my first camping trip since the install. I Zero Leveled it almost perfectly. And still no action from the Mid jacks. Am I missing something or do I have another issue I should be looking at. Any help would be Greatly appreciated. I’m about ready to pull my hair out trying to figure this out. Can’t wait for your INPUT!
Roger P.