Thanks for all the comments and advice.
The battery had been on shore power for several days at home. The next morning I recharged with the generator and converter to 12.9 volts. The dealer's testing machine showed 12.8 later that morning. Not sure if this is a load test but he said the battery was fine...
I received other replies on other boards that the draw isn't completely out of normal. I also spoke with an owner of a similar rig at the campground who gets similar battery life.
Time to shop for a couple 6 volts to hook up in series..