Get  an ohmeter to check the ciols resistance for starters check the secondary windings each test leads on ground & spark plug output terminal on coil & tell us you have. As you turn the flywheel magnets past the coil laminations the magnets align with A & B laminations then B & C laminations Once the flywheel reaches that point in rotation your points should open. Use the meter or small light with felt markers on the outside of the flywheel to get the best spark. Don’t remove much material from the pointss, use the meter to show the least amount of resistance possable. Remember the magneto is a chain of parts & one broken link stopps everything. Use masking tape on the laminations & rotate flywheel to get clearances correct, coils to flywheel. Have you tested your capacitors yet? Leaky caps  Will kill the spark. Hope this helps

Yes the secondary winding is suspect go from hi voltage output on coil to ground, set the ohm meter on 5 to 10 K (1000) & see what you get for a reading. As far as the plug wires go to a neon shop & get GTO hi voltage wire for the spark plug wire. No shipping costs & should sell for a buck a foot & works great, rated at 15000 volts. If you can get hi flex wire. Don’t adsk how I know neon, I did miles of it restoring vintage signs, Fun work!! Actually neon & argon gasses, argon for the blue colors. Yes long winded!