I know how to drill them out and get them apart, but when put back together, are they ever really riveted? I know the Mr. John method of using a tap and screw. The replacement rivets that are available almost look fake. Are they epoxied and the head of a "rivet" but back in place to give it that look? I have read here that when they are made they are not really rivets, but a post that has the head mushroomed to resemble a rivet. What is the real method?