Well, since Mr. Mayo is no longer working his magic, I thought I'd give it a try. I did not, however, have the nerve to try it on one of my Sebenzas (all I have currently are woodies and a unique graphic). I acquired a BM 750 and proceeded to void the warranty by tearing it apart. I used my drill press and drilled a series of progessively smaller holes on both sides and gave each hole a slight chamfer with the next size larger bit. While apart, I polished the bearing surfaces of the blade around the pivot (much smoother action now). Before reassembling it, I re-blasted the scales and pocket clip with 120 grit aluminum oxide. It turned out well but I still don't have the cajones to try it on a Sebenza
For those of you with a drill press and blast cabinet, give it a try.