It is on an 1985 Chevy C10 1/2 ton, sbc 350, TH350 trans, performer intake, and RV/Towing cam. Carb # is 17082234. I purchased the parts through Cliff's and have been trying to follow Recipe #1. So far no major issues but I checked the main air bleed which measured out to .120, so I resized it down to .070. By accident I resized it down, but now after looking over the numbers, I should have resized it to .060. Is this a problem or should this be resized down more? I purchased a rebuild kit, #74 jets, 50M primary metering rods, DA secondary rods, and have a P hanger. The fuel inlet seat Cliff sent is .130. Also, when going through the other measurements, the accelerator pump discharge holes measure .073. It looks as though they should be .026 - .028, what is the best way to size these down? Should I possibly be building this carb according to one of the other recipes for my truck? After reading the book, I felt that recipe #1 was my best bet for economy & power. Any help would be great.