Of idle stumble, Holley 4010

I just changed geers from 2:45 to 3:90 and then a stumble started to apeer when i give all from standing. In other cases it runs great, no hesitations no nothing. I have tried to change springs in acceleration pump, but that did not do much. My guess is that IT needs more fuel, but in the secundarys or the primerys? Oh, it's a holley 4010 on top of a 318.