You might use a new approach. Put in retrofit electronic points and change
to a coil without a resistor.

THIS IS SO MUCH BETTER! I live in MN and I've changed all my old tractors
over. Now they all start if the battery can kick it over and I haven't
replaced points in years.

This will cost you about $100. Any autoparts store can order them. I
couldn't find it, but there's an online website to get them cheaper, just
for tractor restore.

Karl