An update on the coupler. Camping World in Fountain CO was nice enough to go halfway on the cost of replacing the coupler. I didn't leave until I felt the ball and coupler would release fairly easy. Turns out one of the mechanics said that some of the balls installed were not quite round. They replaced the ball and all works well. So we are back enjoying the 303. Hope this helps anyone with the same issue. Appreciate everyones input previously.