A new bushing came this morning from EGW. It fits like a glove, very tight and very well made. In fact, it was just a hair too tight on the barrel, so I put a dab of very fine grit lapping compound on the tip of the barrel, assembled the slide with the barrel and bushing and the frame, and worked the slide back and forth just a couple of times, then disassembled everything and cleaned the barrel and bushing thoroughly with #9. Now the fit is perfect, absolutely no play and the slide still unlocks very easily.