Holley secondaries won't open

Take a paper clip and attach it to the secondary diaphragm rod that comes out of the diaphragm and connects to the throttle shaft. Slide the paper clip so it is all the way up against the bottom of the diaphragm. Drive the car and accelerate enough so the secondaries would open. Come back and take note of where the paper clip is. If it has been pushed down from where you put it, the secondaries are opening. If it is in the same position they are not. Report back and we can go from there.