Reluctor Phasing

The poof sound you are chasing may be a lash setting too tight, or burned valve from that. Can't fix that by messing with ignition.

About changing wire polarity on pickup. The electronics for the trigger sense must see a negative dip then go positive. The negative happens when the reluctor tooth passes the coil pole tip, draws magnetic flux, the voltage drops to zero, at the trailing edge the flux increases and ignition is triggered. That is correct polarity. Check it by setting the crank point for static timing that you see at idle with light, then check the reluctor tooth vs pickup pole, it should be near trailing edge. If it is clearly in the gap between teeth, then the polarity is wrong. Wrong means cap phasing will be off, and tigger point will wander greatly, because the flux between the teeth is not changed abruptly, except for runout, or noise triggers. The trigger point will likely vary timing from cylinder to cylinder.