Thanks for all the replies. I also heard back from Newmar and Ramco customer service this morning. Both confirmed what was said above. Round Plastic cover on bottom must be removed, bolt removed from bottom holding arm on to base. Once arm is removed, plastic cover over base can be removed to access inter mounting plate that attaches with four screws. Haven't totally removed it all yet. It's a chore to get the arm out once the bolt has been removed. Wedged in there pretty good.
2010 Dutch Aire 4317
2014 Grand Cherokee Summit Ecodiesel