I'm rebuilding some door hinges. This is the kit I have. Question.. Which bushings do I use? The knurled ones or the bronze ones, or both? Do I need to remove the steel sleeve that is in the old hinge, or simply drill it so I can press in the new bushings? The knurled bushing is .488" and the bronze bushing is .420". I feel like it is kind of a dumb question, but it looks like the kit has more bushings than is needed. Thanks.