I have two minor nags that I could use some advice on.

My 312 has idled flawlessly for about the last 500 miles. Now (at idle) it has a slight miss about every 5-8 seconds. Just a little "bump" that you can sense only for a slit second.

The second nag is at a steady cruise speed (+-60mph) the car surges a little. It stops pulling for just a second, then starts pulling again. If I hit the gas, it pulls as it should. The car has a new gas tank, fuel lines, mechanical pump, fuel filter, carburator, distributor, plugs and plug wires. None of these items has more than 1,000 miles since new.

Would any of you have some ideas as to what might be causing these two glitches?

Thanks, in advance, gentlemen.