72 360 first start question

Ok thanks guys, these are both good advice. I feel like it has to be vacuum related too. I have the throttle screw just barely turned, quarter turn past being loose. and I have the idle mixture screws 2 1/2 turns out. After experimenting with them this seems to be the best setting so far. I'll look at the secondary plates today. I do have the vacuum advance connected to the ported vacuum on the carb. and the big carb port is connected to the crank case breather.. That's how it's set up on my 68 dart with the same carb. I hear you about new not necessarily begin good. I have lots of new parts be junk lately. I might try swapping the dist. from my dart and see if that changes anything. Just hate messing with a car that's running good!