Thanks for the comments. I went to the Honda Shop and borrowed their gauges to verify that my throttle body was in synch; it was at idle, at 1500, at 2500, and beyond. Needles never varied. The only thing I can come up with that would cause the buzz is the timing trying to advance at that particular rpm range. Much like the ole airheads between 2.5 and 3.0 K. I don't have that device that blinks when the timing mark has arrived at .009 btdc. I'll keep playing until I find the gremlin.............
