Thanks Radar, for helping me learn about the 302. I wish that I had more Holley experience so I could help. DueceCoupe is on the right track IMHO. At some point between idle and man metering you are either running out of fuel or some passage is plugged with dirt ect. On my boat which has a Holley 2bbl it started surging and bucking at about 1300 rpm. Idle and anything else was fine. Took it apart and found a small piece of dirt in one of the passages in the metering block. Now it runs ok. One question, if you open the throttle very slowly in first gear from idle does it still have a flat spot? Jay
