Hey guys, I have an older 850 DP mechanical secondaries with 2 corner idle. I had a lean spot at about 2000-2500 rpm if I just ease into the throttle shown by a wideband. So I took out the primary metering block and tapped the idle feed restrictors for 6-32 brass hex heads then drilled holes with wire gauge bits. I started with a .038 and it was way lean I had to have the idle screws out 5 full turns just to run. Then went to 0.61 and it was way to rich 12.2-12.5 on the wideband at idle. Now I'm waiting for some new bits to come in the mail in between the .038 and the .061 sizes. Can anyone tell me the stock size of the press in IFR in the primary side? Carb number 4781. I have been doing some research and all I hear is stock is about .035 or so but I think that is for 4 corner idle. Why do my IFRs seem so large?