Do a leak down test. There are more than a couple how to's to build your own on here.
Honestly throwing parts at it doesn't do anything except drain your wallet.
Keep
It
Simple
Stupid
Pick 1 thing, work through that 1 thing. document changes and results.
Not fixed? Move on to another thing.
Start with the leakdown, that will tell you the health of the rings and reeds, as well as tell you if you have any air leaks.... Air leaks will kill the bike quicker than shit.
Second go with fuel delivery. Did you COMPLETELY disassemble the carbs, Tank/Dip/ultrasonic clean, rinse with brake cleaner then blow out EVERY orifice with compressed air? Put the Slides in correctly on the correct side carb?
Fuel is good.... then move on to the stator, Again many DIY hold your hand tutorials on how to / what to check. Ohm checks, air gap, where the best place for ground is etc.
Stator checks out, ok Check the coil. Ohms, grounds, Wires, boots....
Next would be a short in the harness or one of the switches.... Have fun trouble shooting if this is the issue.
Remember when you change more than 1 thing at a time you can't point your finger at a single change and know what you fixed.