I am looking for some help - I have a 1987 Palomino pop up, and on the lift arms are little plastic protective covers. A couple of them are cracked, and they get caught on the outside screen when we are packing up, so I want to replace them (I purchased some). The problem is, they are riveted to the lift arms. What's the best solution to attach the new ones? I don't want to accidentally damage the lift arms and I have no idea how to remove rivets. Here's one that's in relatively good shape: https://db.tt/S9RJonVZ Here's what I want to replace: https://db.tt/fspsCnFk Any advice is much appreciated! Thank you.