I have a 327 i just put together I have a 750 double pumper mec sec 12R-4770B, I think jets are to high i have 70 and 76 seems like a lot of gas when i turn car off flames come out exhaust a little. The carb i had for years i bought it new only used a few times i rebuilt it. 1) i striped bowl screw i have to get bowls on the way. 2)was going to replace secondary metering block with a air fuel adjustment.3) my base plate has butterflys 173 and 172 i changed plate the one iam useing now has 180s. i have a 2.5PV. my vacuum is 15. I need help