I have a 99 Windsor with the swing arm door. Take the arm off, take a punch and punch the heck out of the rivet on the top, turn it over, punch the rivet on the bottom until the arms are real tight when they swing. If they're not real tight, punch them again. I have two of those swing arms. When the rivets get bad, take them down to a machine shop and have them replace the rivets. I would advise you to use stainless steel rivets on the door if they have to be drilled out. Aluminum will work. Its very inexpensive. I don't know what Monaco wants for the arms any more but the last time I bought one it was $65. The way to tighten them is just to punch the rivets. Saves a lot of time and money. Try it and see if works for you. Hope this helps. Good luck. Let me know if it works for you. Jim