Edelbrock springs 1406 and 1405

Thanks 318WR, the blue spring was the last one I had in it. Between the blue spring and a step down leaner in both rod and jet, I would have thought that would have made a bigger change. All these changes are on the primary carb.
Timing was at 18* approx. I have bumped it up to 20* currently.
FYI 2ndary/front carb is 1405 and is at stock calibration.

318willrun said

I would go to the weakest spring you have for a starter. I would also see if you can pull more initial timing into it. To me, it sounds laboring in the video. Also, if one end of the engine looks to be obviously more rich than the other end, then you might have one carb doing most of the damage

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