http://www.peachparts.com/shopforum/showthread.php?threadid=65957&highlight=starts
I've jumped in on a lot of other conversations about this matter. This is where I posted about the problem, and didn't get anywhere.
I can tell you it isn't the airflow pot either, or a vacuum leak, or spark pluges, wires, cap, rotor, O2 sensor, ETc..
The link about residual fuel pressure is all anyone I'm aware of has ever come up with. And that isn't a solution, just a place to start looking.
If anyone has a solve.. I'm all ears.