Having a little trouble...

you should really check the compression with a gauge that can be had at any auto parts store for 30 bucks.
you should be able to see through the pilot jet in carb when held up to a light.

if it was mine and i tried everything that you have
and i felt i did these things the right way
i would
at least get a real compression test on it
120psi would be normal
before i rip things apart.
strong spark/spark at the right time=flywheel key
fuel/air enough compression it should go booom
it was probably parked and sold for 200 bucks for a reason.
While we are throwing out possibles it could even be a flywheel magnet came loose or
previous owner thought it was the stator and threw a 30 dollar stator that wont work and if it did not for more then a week lol.....
just throwing out ideas loving the massachusetts plate's on cars hehe
i know it is a big guessing game for all of us but
start eliminating the possibilities with hard facts

alot more to be said but lets get a real compression test
spark test
how did you go about the tors bypass?
on your year engine it should have just been unplugging the brain that it under front nose.