does it miss at 3K RPM in your driveway? I would try that & unplug/cap the can & see what happens. that will reduce the timing & shift RP clockwise. Yes keep the dist for now as the odds are real good that we can pin down the culprit without another purchase. lets find out what part/system is acting up.
As someone pointed out it actually starts to act up at around 2500 then gets worse. im going to set #1 at tdc and check rotor position then set at 5* ong see what she does
