tight bushings (you said OK there). replace the pickup & vac adv (10.5) as needed. reluctor is bad? SMP brand is fine. check the pin that connects the top plate for slop. set gap at .008". check rotor phasing. NAPA Echlin MO3000 rotor with .060" longe blade ($8 & change out the door). cap with ribs underneath & brass terminals. set initial then total (slots) to 36 (initial+slots) then springs then adj the can (CCW slows the slope). Nacho modified the adv plate so the reluctor gap changed only .001" as the can moved the plate thru its travel. I'm gonna do it but ain't got to it yet. drive out the lower roll pin/remove the plastic collar & add shims (speedway motors has a kit) & want no bevel on the washers you use to reduce end play to .005". peen the lower tang or weld it up so there is no rotational slop in the tang/intergear slot fitment which alters cam phasing & shows up as spark scatter when using your timing light. that's it for dist blueprinting