I have heard my entire life that the older vehicles were the simplist to work on, funny thing is that I am only fimiliar with newer ones.(and motorcycles) Just picked up a 73 jimmy with a 350 from my dad, he had pull the old carb off,so I purchaced a reman. q-jet. I was told that the idle screws should not need to be adjusted. But just off idle there is a signifigant dead spot before it starts running out well. I checked the timing and it was advanced two degrees, I put it back at zero. No luck there. I decided that I will leave it there until I figure the carb issue out. Points,cap,rotor,wires and plugs are all good. The choke seems to be hanging up a little, it only opens about 3/4 thus not allowing the secondaries to open either. That will be solved tommorrow, but I was courious if that would cause the off idle hesitation? and if not what might it be?