You’ll never be able to properly diognose a problem if you jump around to 2 or 3 different things. And it’s really frustrating if the problem goes away and you have no idea what you fixed to make it go away. Focus on the carb for now. We can tell it needs some tuning. After that, if you still have issues, move to the ignition. In a prior post I said “as long as your ignition timing is REASONABLE and STABLE”, and hopefully it is. If that’s the case focus on the carb.