I got a Cold Steel Arc-Angel and started to switch the handles as described at Balisong Collector. Here's the problem...I got it started turning just fine, but it appears that the "rivet" part the screw goes into turns with the screw. I managed to loosen it up a bit with about a hundred turns, but now I have one handle looser than the other, and can't loosen or tighen any more. How do I keep the rivet part from turning so I can either extract or tighten the screw? I've tried pushing the rivet down hard on a piece of rubber while turning, hoping to get more friction on the rivet head. I've thought of heating it to expand the rivet, but figured the screw would expand the same. Help!!