That's exactly what's happening...the timing is jumping all over, and strobe isn't lighting consistently, engine is bucking/farting. It wasn't running this bad before the distributer change.
It's sooo easy to get cylinders 5&7 swapped at the plug wires.
Also check the distributor for up and down play in the shaft.
Timing stuff should all be changed as a set. (not that this is the problem)
Another thing is the idle speed since if too high can cause mechanical advance to try to come in at idle.