I've tuned and had good luck with other Eddys, AVS, TQ, and Holley offerings. The 750 Eddy was trouble on any number of engines. They just don't seem to respond to changes like other carbs. You can get them to run better after some work out of the box, but not a easy as virtually any other carb. Then you might even be lucky enough to get one that has mystery problems with signal. I would rather put a carb that works right on it and be done. No reason to fumble around tuning a carb when you could be driving the car.