If everything checks out. You may have to use the old coil laminates and put the new coil core on the old laminates. The aftermarket brands can have laminates that are not the same measurements and can cause an issue with improper laminate to flywheel magnet gapping. Thus causing no spark, but you must recheck your ignition plate. Could be something simple as poor contact. Clean all contacts going to ignition plate and the ignition plate to the motor.
Also, take a picture of your coils’ laminates facing from a horizontal view. Want to see if those laminates are mounted / positioned flush with the Magneto plate’s line up bosses.
Cheers,
Cajun
