[Bobcat]

The reason the Quick Fuel jets and the Holley jets are different is because Holley jet flow is determined not just by the hole size but also by the angle of the bevel/taper in the jet . I spent some time looking over a chart that compared Holley hole diameter to actual flow rates a while back and found some jets with the same hole diameter flowed completely different amounts of fuel ( measured in cc ) . If you just drill a straight hole , it won`t flow as much as one that has the bevel/taper in it ... another reason to not just drill out jets .
FWIW , I have a Pro Systems 950 on a dual plane on a Ponds 482 . Primary is 74 and secondary is 84 , Primary PV is 4.5 and no PV in the secondary . I have changed the IAB , pri and sec to 80`s . Keep in mind that I use Holley jets , so this probably won`t be a direct comparison .