Its me again, recently rebuilt the 350 SB in my son-in-laws 82 C-10. We can get it started and when it runs it seems to run fine it just will not idle. I have hooked up the vacuum lines and it still doesn't idle. Also to get it started you have to pump the accelerator pedal and hold the pedal down to get it started. It sounds like time to rebuild the quadrajet. Anybody have any other ideas or are my assumptions about the carb correct.