Two things. First I like the evenger carb. It runs real clean and has a great fuel curve. Was your cruise a/f way lean that you had to richen the primaries? If that was good I would not have richen up the primaries. Also was the dyno a dynojet type that is a fixed wieght or was it a eddy curent type? The fix wieght type are more repeatable. Also you would really need to see the acual resaults at the track. The dyno is only a tuning tool. I am surprised that the no. went down with the gear change ussaully they go up with more gear. Put the other carb on and see what happens. Jake