Originally Posted by Old skipper
The armrest will come off start in the up right position push in towards the seat back and continue rotating up and towards the back. What you have is a shaft with a pin that fits behind a slotted ring. It has been a few years since I had the non adjustable arm rests and to tell you the truth I hated them so much I considered buying two new seats because the wife could not lean her seat back and have the arm rests down.
Hello, just purchased a 2017 29ME with the same issue. I had both seat arm rest at the wrong angle. All I did was apply pressure down ward at the end of the armrest and then slowly move to the desirable position and returned fully upright, give it a try.