To me so far it sounds like a fuel/air issue. I'm not sure if you've actually taken the carbs apart and cleaned them or not but you should for sure just to make sure nothings jacked up or dirt stuck somewhere etc. Make sure to pull the main jets, pilot jets, float needle all out and blow them out with air and/or carb cleaner. (you could have a little piece of sand stuck in a jet causing it to run weird or not at all without spraying fuel in manually).
I would also check the following things after you have the carbs clean and back together:
Clean air filter with nothing blocking the airways (dead mice, rags, etc.)
Carb slides need to be in correctly (left and right sides) make sure the “cutout” at the bottom of the slide is to the rear of the bike and the other smaller cutout is facing the idle adjustment screws you put in when you eliminated TORS.
Make sure the slides move freely and “clack” nice and clean at the bottom when you sharply release the throttle
Sync the carbs
Make sure the choke tube is on connecting the two carbs
Make sure the crossover tube in installed
Make sure all connecting boots from filters to carbs and carbs to intake are all tight and not leaking especially the ones after the carbs toward the motor. (An air leak on the motor side can cause lean conditions and make the bike run crazy.)
If you do all of this and it still acts up as you described then you’ll have to move on to the frustrating task of chasing electrical gremlins…