Im still the very proud owner of two denon sc3900 media players. For quite sometime now i noticed the bpm will not match on both players. If one player is playing a tune with 160 bpm and the other player matches it one player will start to walk off the grid. So it takes like 10 to 20 seconds before it all goes haywire timing wise. Is this a problem of the engine 1.5 software or is one of my players getting wonky. I tried skipping bpm analyze in engine or change the beatgrid mode in the software or in the players themselfs. I really do love these players so im really anxious about fixing this.