Issue with crane cams hi-6 cd ignition

I wanted to give everyone an update to what the issue was.
I figured out the problem was rotor phasing in the firecore distributor that I had purchased at Mancini racing.
Rick from firecore took real good care of me and sent me a new distributor right away and I installed it and checked the rotor phasing and it was much closer to the cap terminal.
So now the Miss firing is gone and the vibration that came from the miss fire is gone.
I realized it was a rotor phasing issue because when I un-hooked the vacuum advance I noticed the issue was gone.
Soon as I hooked the vacuum advance back up the issue would appear again.
So the vaccum advance was pulling on the advance plate ccw which was pulling the rotor away from the cap terminal causing the miss fire.